必修四Module 6 Unexplained Mysteries of the Nature World课时作业和答案详解

本资料来自于资源最齐全的２１世纪教育网www.21cnjy.com
必修四第六模块课时作业
Module 6　Unexplained Mysteries of the Natural World
自学引导—新学初探
Ⅰ.单词（必记）
1．_______ vt. 袭击；攻击
2．_______ vt. 声称
3．_______ vt. 占地(多大面积)
4．_______ vi. 适应；适合
5．_______ vi. 不见；消失
6．_______ n. 名誉；名声
7．_______ adj. 吓人的→_______ v. 使害怕→_______ n. 害怕→_______ adj. 害怕的
8．_______ vi. 存在→ _______ n. 存在
9．_______ vi. 进化；演变→_______ n. 进化，发展
10．_______n. 毁坏→ _______ vt. 破坏，毁坏
11．_______ adj. 变化莫测的→ _______ adj. 可预言的
12．_______ adj. 正面的→ _______ adj. 反面的
13．_______ vt. 象征；暗示→_______ n. 象征，迹象
14．_______ n. 身份；特性→_______ vt. 辨别，确认
15．_______ n. 运气；命运；财富→_______ adj. 幸运的→_______adv. 幸运地
1、 重点短语(必背)
1．be related _________　 与……有关
2．be sceptical _________ 对……怀疑
3．throw light _________ 帮助弄清楚；阐明某事
4．come straight _________ the point 谈正题；开门见山
5．be _________ in the news 再次成为新闻
6．die _________ 灭绝
7．_________ to 由于；因……造成
8．go _________ 选择；喜欢
2、 经典句型(必会)
1．He claims to h ( http: / / www.21cnjy.com )ave seen a round black creature moving quickly through the water.
他声称看见过一个圆圆的、黑黑的东西在水中快速游动。
解读：to have seen 是动词不定式的完成形式，表示动作发生在谓语动词claim之前
仿写：他认为没有邀请我们参加晚会是个遗憾。
He thought it a pity __________________________ to attend the party.
2．They say that the l ( http: / / www.21cnjy.com )ow－temperature lake is unlikely to be able to support such large living creatures. 21·cn·jy·com
他们说，温度低的湖泊不可能生存有体形如此巨大的生物。
解读：be unlikely to do sth. 表示“做某事是不可能的”
仿写：他们未必会来，因为天气这么糟糕。
They ____________ come since the weather is so bad.2-1-c-n-j-y
课时作业训练
Period One　Reading Comprehension
Ⅰ.用适当的介、副词填空
1．It will attack anyone who goes close ________ it.
2．It lives ________ the mountainous forests of northwest America.
3．It looks ________ a very large monkey.
4．It is tall and has ( http: / / www.21cnjy.com )a grey face and long claws instead ________ hands.
5．The monster ( http: / / www.21cnjy.com )，which seemed to be black ________ colour，was ten metres from the edge of the lake during the most recent sighting.
6．It jumped out ________ the water like a seal.
7．The soldiers，who ( http: / / www.21cnjy.com )were walking ________ the side of the lake，watched the creature swimming for about two minutes.
8．After three or four hundred metres it dived ________ the water.
9．Some photos hav ( http: / / www.21cnjy.com )e been taken but they are not clear because it was too far ________.
10．It covers an area ________ about ten square kilometres.www-2-1-cnjy-com
Ⅱ.佳句翻译与仿写
1．A third report ( http: / / www.21cnjy.com )came from Li Xiaohe，who was visiting the lake with his family.
翻译　
________________________________________________________________________
________________________________________________________________________
仿写　尽管前两次失败了，他又试了一次。
________________________________________________________________________
________________________________________________________________________
2．He claims to have ( http: / / www.21cnjy.com ) seen a round black creature moving quickly through the water.
翻译　
________________________________________________________________________
________________________________________________________________________
仿写　据说他已经出国了。
________________________________________________________________________
3．They also think t ( http: / / www.21cnjy.com )hat there might be similar creatures in other lakes around the world.
翻译　
________________________________________________________________________
________________________________________________________________________
仿写　专家认为可能会有另一场大雨。
________________________________________________________________________
________________________________________________________________________
4．They say that the ( http: / / www.21cnjy.com ) low temperature lake is unlikely to be able to support such large living creatures.
翻译　
________________________________________________________________________
________________________________________________________________________
仿写　他们不可能提前完成工作。
________________________________________________________________________
________________________________________________________________________
5．It is 2,189 metre ( http: / / www.21cnjy.com )s high and covers an area of about ten square kilometres.
翻译　
________________________________________________________________________
仿写　据说这家工厂占地200亩。
________________________________________________________________________
________________________________________________________________________
Ⅲ.单项填空
1．It often gets angry and will ________ anyone who goes close to it.
A．burst B．break C．erupt D．attack
2．The Grey Man is a ________ creature that lives in Scotland.21·世纪*教育网
A．frightened B．frightening
C．being frightened D．to be frightened
3．The monster，________ seemed to be black in colour，was ten metres from the edge of the lake during the most recent sighting.【来源：21cnj*y.co*m】
A．that B．which C．what D．/
4．A third repo ( http: / / www.21cnjy.com )rt came from Li Xiaohe，________ was visiting the lake with his family.
A．who B．whom C．that D．whose
5．The weather was fine and the lake was ________.
A．silent B．quiet C．calm D．still
6．There ________ reports of monsters in Lake Tianchi since the beginning of the last century.
A．were B．Are C．have been D．had been
7．Some photos have been ________ but they are not clear.
A．taken B．made C．done D．explored
8．Many people think t ( http: / / www.21cnjy.com )he monster ________ be a distant cousin of the Loch Ness monster in Scotland.
A．can B．may C．shall D．would
9．Scientists，however，are ________.
A．sceptical B．Doubt C．support D．convince
10．They say that the l ( http: / / www.21cnjy.com )ow temperature lake is ________ to be able to support such large living creatures.
A．impossibly B．Unlikely C．unlike D．dislike
Ⅳ.阅读理解
A couple from Miami，Bi ( http: / / www.21cnjy.com )ll and Simone Butler，spent sixty six days in a life raft(救生筏) in the seas of Central America after their boat sank.
Twenty one day ( http: / / www.21cnjy.com )s after they left Panama in their boat，Simony，they met some whales(鲸鱼)．“They started to hit the side of the boat，”said Bill，“and then suddenly we heard water.” Two minutes later，the boat was sinking. They jumped into the life raft and watched the boat go under the water.
For twenty days ( http: / / www.21cnjy.com )they had tins of food，biscuits，and bottles of water. They also had a fishing line and a machine to make salt water into drinking water—two things which saved their lives. They caught eight to ten fish a day and ate them raw(生的)．Then the line broke. “So we had no more fish until something very strange happened. Some sharks(鲨鱼) came to feed，and the fish under the raft were afraid and came to the surface. I caught them with my hands.”
About twenty ships pa ( http: / / www.21cnjy.com )ssed them，but no one saw them. After fifty days at sea their life raft was beginning to break up. Then suddenly it was all over. A fishing boat saw them and picked them up. They couldn’t stand up. So the captain carried them onto his boat and took them to Costa Rica. Their two months at sea was over.
1．Bill and Simone were travelling ________ when they met some whales.
A．in a life raft B．in Miami C．in Simony D．in Panama
2．The whales hit the side of the boat，and then ________.
A．they brought in a ( http: / / www.21cnjy.com ) lot of water B．they broke the side of the boat
C．they pulled the boat D．they went under the water
3．After their boat sank，the couple ________.
A．jumped into the life raft B．heard water
C．watched the boat go under water D．stayed in the life raft
4．During their days at sea，________ saved their lives.
A．tins of food an ( http: / / www.21cnjy.com )d bottles of water B．a fishing line and a machine
C．whales and sharks D．twenty passing ships
5．When they saw the fishing boat which later picked them up，________.
A．they were too ( http: / / www.21cnjy.com )excited to stand up B．they couldn’t wait to climb onto the boat
C．their life raft w ( http: / / www.21cnjy.com )as beginning to break up D．they knew their two months at sea would be over
head n．头；首领，头脑
生义：v.领头；前进
1．After dinner，he headed home.
晚饭后，他往家里走去。
2．Hearing the news，she headed for her school.
听到这个消息，她朝学校走去。　　　 ( http: / / www.21cnjy.com )　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
Period Two　Language Points
Ⅰ.语境填词
1．Recently there h ( http: / / www.21cnjy.com )as been a ________ (急剧的) decline in interest in gardening throughout the town.
2．It’s said that a ( http: / / www.21cnjy.com )sea ________ (怪物) appears in the lake now and then.
3．They’re very ________________ (神秘的) about their holiday plans.
4．The young ( http: / / www.21cnjy.com )scientist is ________________ (怀疑的) about the theory raised by the authority.
5．He stayed under ( http: / / www.21cnjy.com ) water for two minutes，and then swam to the ________________ (表面)．
6．She ________________(声称) she knew the truth.
Ⅱ.选词填空
be covered w ( http: / / www.21cnjy.com )ith; get close to; be sceptical about; out of place;come into sight; make a claim on
1．The Changbai Mountain ________________ snow all the year round.
2．Really，I ________________ their professed sympathy for the poor.
3．Only when you ________________ the flower can you smell its sweet.
4．Never put your ( http: / / www.21cnjy.com )books on the floor. You know，they’re ________________.
5．The fog died a ( http: / / www.21cnjy.com )way and the mountain in the distance gradually ________________.
6．They ________________ the insurance for the stolen luggage.21教育网
Ⅲ.同义词辨析
1．用claim，declare或announce的适当形式填空
(1)The U．S. ________________ war on England in 1812.21cnjy.com
(2)Both sides ________________ that the other side didn’t obey the peace agreement.
(3)With this ( http: / / www.21cnjy.com )extra evidence John Snow was able to ________________ with certainty that polluted water carried the disease.
(4)You can ________________ your money back if the goods are damaged.
2．用calm，quiet，still或silent填空
(1)Hearing the bad news，she still remained ________.
(2)Keep ________，please. The speaker is coming.
(3)Last night he saw a ________ film.
(4)He stood there ________，except his lips were slightly moving.
(5)She has always lived a ________ life.
Ⅳ.单项填空
1．—Do be careful in the forest. Some animals may________people.
—OK. I’ll remember it in heart.
A．dislike B．Destroy C．attempt D．attack
2．No group________ that they were responsible for the bomb explosion.
A．claimed B．Cleared C．explained D．spoke
3．Without real ( http: / / www.21cnjy.com )photos of the monster，we are________ about its existing.
A．sure B．Certain C．sceptical D．doubt
4．They climbed across the mountain________ snow.
A．covers with B．cove ( http: / / www.21cnjy.com )red with C．covering with D．having covered with
5．Who were the so called guests ________ to your party last night
A．inviting B．Invited C．to be invited D．being invited
6．According to the shopping list，________a dozen socks.
A．there seems to be B．there seem to be
C．there seem to have D．it seems to be
7．At the________ news，the________ boy couldn’t move or cry.
A．frightening；frightening B．frightened；frightened
C．frightening；frightened D．frightened；frightening
8．I seem_______ him somewhere before.
A．seeing B．to be seeing C．to have seen D．having seen
9．The monster is described ________a________ animal.
A．as；greenish blac ( http: / / www.21cnjy.com )k B．like；greenish black C．like；green black D．as；green black
10．It seems ( http: / / www.21cnjy.com )that it is ________ to rain，so take the umbrella with you.
A．like B．Likely C．unlike D．unlikely
Ⅴ.阅读理解
This natural ( http: / / www.21cnjy.com ) wonder’s extraordinary beauty let the U．S. government create the world’s first national park. For a young country just coming of age in the early 1800’s，the discovery of Yellowstone helped explain America’s character with its wonderful landscape.
Today，Yellowstone’ ( http: / / www.21cnjy.com )s identity(身份)is closely connected with its powerful，natural geysers(喷泉) such as the ever present：Old Faithful. Old Faithful erupts about every 85—87 minutes. It’s 130—140 feet tall，and it’s attractive.
The unbelievable ge ( http: / / www.21cnjy.com )ysers and picture postcard landscape brought Yellowstone its fame. But today，its wildlife population is just as popular. The most arguable of these is Yellowstone’s wolf population. Until recently，the wolf almost disappeared.
This world has been ( http: / / www.21cnjy.com )filled with killing wolves. We have been killing wolves for centuries，probably for thousands of years. Afraid that the wolves would threaten their livestock(家畜)，government bounty hunters in the early 1900’s killed Yellowstone’s grey wolves for the price of fifteen dollars a head. They were hunted to near dying out. It would be almost a century before an effort would begin to reverse this damage.
In 1995，Yellowstone ( http: / / www.21cnjy.com )’s wolf population was almost gone，so Douglas Smith (Yellowstone’s Wolf Preservation Project leader) went to Canada to catch fourteen of the animals in an effort to revive Yellowstone’s wolf population. Douglas said，“Catching a wolf is a tough thing to do. And there’s nothing more exciting than flying over a wolf in a helicopter. You throw a net over them，they get tied up，and then you go up and calm them. When you move a wolf from one place to another，they try and get back home. We held them for about ten weeks inside the pens.”
One of the transplante ( http: / / www.21cnjy.com )d wolves in particular has had a lot to do with the park’s wolf repopulation. This wolf，a female known as No.9，is one of the park’s top breeders，and 70% of the wolves born in the park today have her genes. Wolves are now the marquee(招牌)animal in Yellowstone. Many people said it was a lifetime experience seeing a wolf in the wild in Yellowstone.
For encouraging ( http: / / www.21cnjy.com ) the vision(眼力) to preserve one of the world’s most beautiful natural wonders，Yellowstone lands at number six on our list.
1．The United Stat ( http: / / www.21cnjy.com )es built the Yellowstone，because it wanted to ________.
A．develop the tourism B．keep the natural beauty
C．protect the wolves D．build a world natural wonder
2．The underlin ( http: / / www.21cnjy.com )ed word “bounty” in the fourth paragraph most probably means “________”．
A．禁令 B．取消 C．允许 D．悬赏
3．From the passage we can know that ________.
A．the geysers are foun ( http: / / www.21cnjy.com )tains that can erupt very often and are attractive
B．the wolves were killed before because of their threat to livestock
C．with people’s efforts，the number of the wolves can resume soon
D．Yellowstone is the most beautiful natural wonder
4．It is implied in the sixth paragraph that ________.
A．the number of the wolves in the Yellowstone park is very large
B．the wolves are the most attractive natural wonder of the park
C．the wolf，No.9，came to the Yellowstone park relatively early
D．many people said they were very happy to see the wolves here
5．The best title of this passage can be ________.
A．Wolves in Nature B．Yellowstone and the Wolves
C．Yellowstone D．Save the Wolves of Yellowstone
likely和unlikely都是形容词，不能用于It’s likely/unlikely for sb. to do sth.这一结构。
但possible和probable可以。另外，be (un)likely to do的主语应是具有实际意义的人或21教育名师原创作品
物。
1．It’s possible/probable for him to finish the work on time.
对他来说是有可能按时完成这项工作的。
2．It’s too late.She is unlikely to come.
太晚了，她不可能来了。
3．It’s raining outside.It’s unlikely that he’ll come.
外面下着雨，他不可能来了。　　　　　　　　 ( http: / / www.21cnjy.com )　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
Period Three　Integrating Skills
Ⅰ.语境填词
1．Sadly，some of the sp ( http: / / www.21cnjy.com )ecies of birds are ________(绝迹) and we’ll no longer see them.
2．You had bette ( http: / / www.21cnjy.com )r ________(适应) yourself to the new environment quickly.
3．When animals or plan ( http: / / www.21cnjy.com )ts ________(进化)，they change and develop over a long period of time.
4．Gradually the strange man ________________(消失) in the dark.
5．Don’t ________(卷入) me in your quarrel!
6．Many people ( http: / / www.21cnjy.com ) think the monster may be ________________(和……相关) Nessie.
Ⅱ.同义词辨析
1．用discover或uncover的适当形式填空
(1)We must ________ their tricks.
(2)It’s dange ( http: / / www.21cnjy.com )rous for the little boy to ________ the lid of a kettle(水壶)．
(3)It was Columbus who ________ America in 1492.
2．用die out，die away或die down的适当形式填空
(1)Perhaps too muc ( http: / / www.21cnjy.com )h fighting caused the dinosaurs to ________________.
(2)The noise ________________.
(3)The wind has ________________ a bit.
(4)As a result these endangered animals may even ________________.
Ⅲ.完成句子
1．It’s a pity that these animals have ________________(绝迹)．
2．He tried to ________________________(阐明他的理论)，but in vain.
3．He has learned to ________________(适应) his disability.
4．Don’t you ever ________________(考虑) other people
5．If you ________________________(开门见山)，you say what you want to say.
Ⅳ.单项填空
1．This kind of animal has________ in the world.
A．died away B．died down C．died off D．died out
2．When you go to a f ( http: / / www.21cnjy.com )oreign country，you must________ yourself________ new manners and customs.
A．fit；for B．adapt；to C．adapt；for D．suit；for
3．Of the six people in the plane that crashed，only one________.
A．left B．Survived C．remained D．lived
4．Although I had ( http: / / www.21cnjy.com )read the book assigned by the professor several times，it didn’t make any ________ to me.
A．meaning B．Importance C．sense D．significance
5．—Every successful speaker always________，in my opinion.【出处：21教育名师】
—I think many，but not every.
A．comes straightly of the point B．comes straight on the point
C．comes straightly on a point D．comes straight to the point
6．Certainly teachers’explanation will________ the puzzling problems.
A．come to the lig ( http: / / www.21cnjy.com )ht B．throw light on C．make light of D．see the light
7．________the ( http: / / www.21cnjy.com )meeting himself gave them a great deal of encouragement.
A．The president will attend B．The president to attend
C．The president attended D．The president’s attending
8．Mothers holdin ( http: / / www.21cnjy.com )g jobs outside the home should have________ schedules to make it easier to care for their children.
A．heavy B．Smooth C．flexible D．complex
9．—Do you think the movie is wonderful
—Yes，It’s quite ________.
A．nothing B．Something C．anything D．everything
10．He and his wife ( http: / / www.21cnjy.com ) are of the same ________；they both want their child to go to college.
A．soul B．spirit C．heart D．mind
Ⅴ.完形填空
The amount of usab ( http: / / www.21cnjy.com )le water has always been of great interest in the world.__1__springs and streams sometimes means control，particularly in the__2__areas like the desert. The control is possible even without possession of large areas of__3__land.In the early days of the American West，gun fights were not__4__for the water resources(资源)，and laws had to be__5__to protect the water rights of the__6__and the use of the water resources accordingly.
__7__is known to ( http: / / www.21cnjy.com )us all，there is not__8__water in all places for everyone to use as much as he likes. Deciding on the __9__of water that will be used in any particular period__10__careful planning，so that people can manage and use water more__11__.Farmers have to change their use of or demand for water__12__the water supply forecast(预报)．
The__13__water sup ( http: / / www.21cnjy.com )ply forecast is based more on the water from the__14__than from the below. Interest is__15__in the ways to increase rainfall by man made methods，and to get water from the winter snow on mountain__16__.With special equipment，some scientists are studying the ways in which the mountain snow can be__17__，and with the help of a repeater station，they send the__18__data(数据)to the base station. The operator at the base station can get the data at any time by__19__a button. In the near future，the forecast and use of water__20__probably depend on the advanced knowledge of snow on mountains，not on water underground.
1．A. Using B．Holding C．Owning D．Finding
2．A. dry B．distant C．deserted D．wild
3．A. fine B．beautiful C．rich D．farming
4．A. unlawful B．unacceptable C．unpopular D．uncommon
5．A. made B．designed C．signed D．written
6．A. winners B．settlers C．fighters D．supporters
7．A. That B．It C．What D．As
8．A. plentiful B．enough C．any D．much
9．A. type B．quality C．amount D．level
10．A. requests B．requires C．means D．suggests
11．A. effectively B．easily C．conveniently D．actively
12．A. leading to B．due to C．owing to D．according to
13．A. correct B．further C．average D．early
14．A. clouds B．sky C．air D．above
15．A. raising B．rising C．building D．lasting
16．A. rocks B．tips C．tops D．trees
17．A. taken care of B．made use of C．piled up D．saved up
18．A. picked B．produced C．used D．gathered
19．A. touching B．knocking C．pressing D．turning
20．A. might B．can C．will D．should
There exists/existed...有/存在着……
1．There exists a lot of problems to be solved.
存在着很多要解决的问题。
2．There existed a temple at the foot of the hill.
在山脚处有一座庙。　
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
Period Four　Cultural Corner
Ⅰ.语境填词
1．I have read an ( http: / / www.21cnjy.com )article about Yao Ming，one with good________________(名誉) at home and abroad.
2．It is repo ( http: / / www.21cnjy.com )rted that an ________________(不可预测的) tide of rural workers are flooding into big cities to earn money in China.
3．He ________________(暗示) that in fact your help was not welcome.
4．At present ( http: / / www.21cnjy.com )the experts are still uncertain of the skeleton’s(尸骨) ________(身份)．
5．The fire which ( http: / / www.21cnjy.com ) happened last week caused the ________________(毁坏) of our bookstore.
6．He has much mon ( http: / / www.21cnjy.com )ey and doesn’t care about it too much，so he often ________________(大方地) gives some to the poor to help them out.【来源：21·世纪·教育·网】
7．I had wanted to ( http: / / www.21cnjy.com )borrow his bike for an outing，but he gave me a ________(正面的) refusal.
8．On my way to sc ( http: / / www.21cnjy.com )hool，an accident happened.________________(幸运地)，I wasn’t late.
Ⅱ.同义词辨析
1．用due to，because of，thanks to或owing to填空
(1)The sports meeting was put off ________________ the rain.
(2)The failure of the plan was ________________ bad management.
(3)________________ Tom，we finished the work on time.
(4)________________ careless driving，he was hurt.
(5)Our happy childhood was ________________ our father’s hard work.
2．用cause，reason或excuse填空
(1)What’s the ________ of the fire
(2)Can you tell me your ________ for your coming late
(3)None of your ________.I won’t trust you.
(4)The ________ why he is popular is that he is learned.
Ⅲ.完成句子
1．What you said didn’t ________________(有意义，讲得通)to us.
2．White is ________________(……的象征) purity.
3．I think my long a ( http: / / www.21cnjy.com )nd active life must be ________________________(由于)the healthy life I live.
4．She ________________(对我们很慷慨)，so we all respect her.
5．He is a person who ________________________(不负盛名)．
Ⅳ.单项填空
1．With the New Y ( http: / / www.21cnjy.com )ear approaching，friends and relatives wish each other could________ a fortune in the following year.
A．find B．Make C．search D．receive
2．Our arriving late is________ the bad weather.
A．because B．For C．due to D．owing
3．It is said ( http: / / www.21cnjy.com ) that dragons can cause death and________ in the culture of some western countries.
A．instruction B．Instrument C．destruction D．construction
4．He agreed that the accident was________ his carelessness.
Which of the following phrases is WRONG
A．due to B．because of C．owing to D．as
5．As we all know，the Cross is the________ of Christianity.
A．symbol B．Signal C．sign D．sight
6．This company has a very bad________ in that province.
A．repetition B．Reputation C．famous D．name
7．With a nod of his head，he________ to me where I should sit.
A．expected B．Indicated C．signed D．showed
8．When you were there，you would find this map______.
A．of great importanc ( http: / / www.21cnjy.com )e B．Importance C．of important D．to importance
9．As the famous ( http: / / www.21cnjy.com )expert says，the secret of happiness is to think about________ things and stay optimistic.
A．attentive B．Positive C．negative D．opposite
10．It is said th ( http: / / www.21cnjy.com )at the people of Shandong are most________ in helping others.
A．generous B．General C．gentle D．positive
Ⅴ.阅读理解
The arrival ( http: / / www.21cnjy.com )of three queens and their 40,000 workers has made a new sound at one of Toronto’s oldest hotels，and given the cooks at the large white stone building first as much as up to 700 pounds of honey.
The luxury Fair ( http: / / www.21cnjy.com )mont Royal York hotel，where the three bee hives(蜂箱) were put on its 13th floor rooftop terrace this spring to help an in house garden that already provides its nine restaurants with fresh vegetables and flowers such as pansies(三色紫罗兰) which can be eaten.“Last summer，we were up here and talking about how amazing it is that 13 stories in the air that bees and butterflies find this to help the plants grow better and so we got thinking，and I got in touch with the Toronto Beekeepers Cooperative，”David Garcelon said.
The hotel calle ( http: / / www.21cnjy.com )d the three hives the Honey Moon Suite，the Royal Sweet and the VIP Bee Suite and said that no guest or member of the workers has yet been stung.“60 to 70 percent of everything we eat has，at one stage in its development，been pollinated(授粉) by bees，so if you’re at all concerned about agriculture...then bees are really very important，”said Cathy Kozma，chairwoman of the Beekeepers’ Cooperative and a regular visitor to the tiny rooftop garden.“Bees in general are having a very difficult time of it，”she added，referring to a newly discovered disease that does harm to North America’s bee population.Kozma and other beekeepers make sure the hives are in good condition and help Garcelon and his workers to get the honey. “I can’t think of very many foods that are more helpful than honey，”said Garcelon，who will make the ingredient in everything from the soups to salad dressings and ice cream.
1．The bees do good to the hotel by ________.
A．making new kind ( http: / / www.21cnjy.com ) of sound B．giving hundreds of pounds of honey
C．making the flowers more beautiful D．producing more vegetables
2．The luxury Fairmon ( http: / / www.21cnjy.com )t Royal York hotel first introduced bees in order to ________.
A．find some friends for the ladybugs and butterflies
B．find how amazing it is that there’s gardens in the air
C．help the plants in the garden grow better
D．help get enough fresh vegetables for all the restaurants
3．Where did three queens and their 40,000 workers come from
A．They came from the Toronto Beekeepers Cooperative.
B．They came from Reuters who visited the little green park.
C．They came from the luxury Fairmont Royal York hotel.
D．They were caught alive in the farm far from the hotel.
4．When visiting the garden in the air，people would ________.
A．be hurt by the ( http: / / www.21cnjy.com ) bees in the garden B．have no a chance to look at the hives
C．have a taste of t ( http: / / www.21cnjy.com )he honey soup from the garden D．drink some tea with honey in it
5．According to Cathy Kozma，we can know that ________.
A．the bees play an important role in the agriculture
B．the bees don’t face any difficulty in their daily life
C．the bees will never get ill for they can fly quickly
D．the bees should be helped to build the hives
be of＋抽象名词
1．The map is of great value to us.
这张地图对我们很有价值。
2．The meeting is of great importance.
这个会议很重要。　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
Period Five　Grammar and Writing
Ⅰ.用may，might，may have，might have及所给动词的适当形式填空
1．Scientists say it ( http: / / www.21cnjy.com )________________(be) five or six years before it is possible to test this medicine on patients.
2．John ________________(phone) tonight. I don’t want to go out in case he phones.
3．Jane walke ( http: / / www.21cnjy.com )d away from the discussion yesterday. Otherwise，she ________________(say) something she would regret later.
4．—Excuse me. Is this the right way to the Summer Palace
—Sorry，I am not sure. But it ________________(be)．
5．According to your words，you ________________(know)about it.
Ⅱ.完成句子
1．You ________________(不必) do it by yourself.
2．The boy ________________(常常) sit there hour after hour looking at the traffic go by.
3．________(可以) I use your computer
4．You are his teacher. You ________(应该) take care of him.
5．He ______________(不可能) have been to that city.
Ⅲ.单项填空
1．Jack described hi ( http: / / www.21cnjy.com )s father，who ________ a brave boy many years ago，as a strong willed man.
A．would be B．would have been C．must be D．must have been
2．I ________ have watched that movie—it’ll give me horrible dreams.
A．shouldn’t B．needn’t C．couldn’t D．mustn’t
3．Mark ________ hav ( http: / / www.21cnjy.com )e hurried.After driving at top speed，he arrived half an hour early.
A．needn’t B．wouldn’t C．mustn’t D．couldn’t
4．We didn’t fini ( http: / / www.21cnjy.com )sh the work in time. You ________ us since you were there.
A．might help ( http: / / www.21cnjy.com ) B．should help C．could have helped D．must have helped
5．My wallet is no ( http: / / www.21cnjy.com )where to be found. I ________ it when I was on the bus.
A．must drop ( http: / / www.21cnjy.com ) B．should have dropped C．must have dropped D．had dropped
6. ________ your handbag in your office
A．Should you have l ( http: / / www.21cnjy.com )eft B．Must you have left C．Could you have left D．Need you have left
7．That car nearly hit me；I ________ .
A．might be killed B ( http: / / www.21cnjy.com )．might have been killed C．may be killed D．may been killed
8．You ________ go right now if you want，but I think，you ________ ，because we have enough time.
A．may；needn’t B．must；needn’t C．should；may D．may；must
9．I ________ have come ( http: / / www.21cnjy.com ) earlier，for you ________ have needed some help.
A．might；should B．should；might C．must；should D．must；might
10．—Where is my dictionary I remember I put it here yesterday.
—You ________ it in the wrong place.
A．must put B．should have put C．might put D．might have put
11．We________have proved great adventurers，but we have done the greatest march ever made in the past ten years.
A．needn’t B．may not C．shouldn’t D．mustn’t
12．—What’s the matter with Peter
—He was seen crying ( http: / / www.21cnjy.com )when he was coming out of the teacher’s office. He________ by the teacher.
A．may be scolded B．should have been scolded
C．must be scolded D．must have been scoldedwww.21-cn-jy.com
13．What a pity！C ( http: / / www.21cnjy.com )onsidering his ability and experience, he ________better.
A．need have d ( http: / / www.21cnjy.com )one B．must have done C．can have done D．might have done
14．—I can’t find my sunglasses anywhere.
—You ________ have lost it while shopping.
A．may B．Can C．should D．would
15．Oh，I’m not feel ( http: / / www.21cnjy.com )ing well in the stomach. I ________ so much fried chicken just now.
A．shouldn’t ea ( http: / / www.21cnjy.com )t B．mustn’t have eaten C．shouldn’t have eaten D．mustn’t eat
Ⅳ.阅读理解
Compulsive(强迫的) shopp ( http: / / www.21cnjy.com )ers may have a new psychological excuse to blame for their wild shopping.Psychologists at the University of Canterbury in New Zealand are studying the “shop till you drop” habit as a behavioral disorder similar to compulsive pulsive shoppers frequently buy more than they can afford or more than they need，and it causes them distress.
“It becomes a ( http: / / www.21cnjy.com )problem when you are out of control，” psychology lecturer Neville Blampied said.
When you are fe ( http: / / www.21cnjy.com )eling bad and blue，what do you do Some people eat chocolate cake and ice cream. Some people take the credit card and go out to the shop. Bank managers understand the problem because they have to deal with people who have to be persuaded to stop using their cards drawing money.
Compulsive shoppin ( http: / / www.21cnjy.com )g was first discovered in 1915，although it was then known as oniomania. Few studies have been done on the problem.
An advertisement ( http: / / www.21cnjy.com )in a Christchurch paper，calling for people to take part in an experimental treatment program designed by Mr.Wilson，attracted 10 replies. But the problem，said Mr.Wilson，is “clearly not rare”．He thinks that compulsive shopping should be treated with drugs. “As psychologists we are interested in non drug treatments for behavioral difficulties，”Mr.Wilson said.
Compulsive eaters or ( http: / / www.21cnjy.com )shoppers get a kick from their habit. “Both activities provide an immediate kind of kick and you feel a bit better，” he said. “You have long term problems，but human beings are extremely good at not seeing long term problems and are very sensitive to short term benefits，” he said.
The aim of the tr ( http: / / www.21cnjy.com )eatment was to help people find better ways of managing their emotions. The program，consisting of 10 one hour weekly lessons and two follow up treatments，is loosely based on teaching stress management.
“You often have to ( http: / / www.21cnjy.com )start to get people to correctly recognize their emotions. Not being able to know what you really feel weakens your ability to solve the problems connected with what’s making you feel that way，”Mr.Wilson said.
1．What is this article mostly about
A．Signs of compulsive shopping.
B．Studies of compulsive shopping.
C．A comparison of compulsive shopping and compulsive eating.
D．An experimental treatment program designed by Mr.Wilson.
2．The compulsive shoppers will go shopping when ________.
A．they have lots of money B．they are taking drugs
C．they are feeling sad D．they win a prize
3．The underlined ( http: / / www.21cnjy.com ) word “it” in the first paragraph most probably refers to ________.
A．compulsive eating B．a new psychological excuse
C．the study done by Blampied D．the behavior of wild shopping
4．Which of the fol ( http: / / www.21cnjy.com )lowing is considered important in treating compulsive shoppers
A．Teaching them to manage their money better. 21*cnjy*com
B．Teaching them to understand their emotions.
C．Persuading them not to draw money from the bank.
D．Treating them with right drugs.
5．When the wr ( http: / / www.21cnjy.com )iter says that compulsive shoppers get a kick from their habit，he means that they ________.【版权所有：21教育】
A．feel distressed after their wild shopping
B．feel better after treatment from psychologists
C．are better able to deal with stress problems
D．have a feeling of excitement after shopping
Ⅴ.书面表达
假如你是李华，请你根据以下内容，给报社用英语写一封信，向报社讲述你遭遇外星人的情况。文章开头和结尾已给出。
1．下晚自习后，在回家路上看见三角形不明飞行物；
2．从飞行物中走出外星人向你问路；
3．你给他指明方向，并友好告别。
参考词汇：小巷alley；三角形triangle；外星人alien
Dear editor，
I want to tell you a strange
thing._______________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Yours sincerely，
Li Hua
必修四第六模块课时作业答案详解
Module 6　Unexplained Mysteries of the
Natural World
Period One　Reading Comprehension
Ⅰ.1.to　2.in　3.like　4.of　5.in　6.of　7.along
8．into　9.away　10.of
Ⅱ.1.另一消息来自李小和，当时他正和家人在湖边游玩。
In spite of/Despite the first two failures，he tried a third time.
2．他声称看见一个黑黑的、圆圆的动物在水中快速游动。
He is said to have gone abroad.
3．他们还认为，在世界其他地方的湖沟里也许有类似的生物。
The expert thought there might be another heavy rain.
4．他们说，水温这样低的湖泊不可能生存有体形如此巨大的动物。
They are unlikely to finish the work ahead of time.
5．它海拔2 189米，占地约10平方公里。
It is said that the factory covers an area of 200 mu.
Ⅲ.1.D　[attack攻击，符合句意。burst爆裂；break折断；erupt(火山)爆发。]
2．B　[frightening令人害怕的，符合句意。]
3．B　[考查定语从句。monster在非限制性定语从句中作主语，关系代词用which且不能省略。]
4．A　[关系代词who在非限制性定语从句中作主语，that不用于非限制性定语从句中。]
5．C　[calm常指天气无风、海面无海浪；心情平静，无忧虑，符合句意。]
6．C　[由句中的时间状语since可知，句子应用现在完成时。]
7．A　[take photos/pictures拍照。]
8．B　[may可能，表推测，可用于肯 ( http: / / www.21cnjy.com )定句。can表推测，一般不用于肯定句；shall用于二、三人称陈述句表允许、警告、威胁、强制等；would表过去常常。]
9．A　[sceptical adj.怀疑的，不相信的，其他三项都是动词，故排除。]
10．B　[be unlikely to do sth.不可能做某事。]
Ⅳ.1.C　[细节理解题 ( http: / / www.21cnjy.com )。从第二段的第一句“Twenty one days after they left Panama in their boat，Simony，they met some whales.”可知他们是在Simony这艘船上遇见了鲸鱼。]
2．A　[细节理解题。从第二段“...and then suddenly we heard water.”可知鲸撞了船之后，船就进水了。]
3．D　[细节理解题。在他们的船沉没之后，the couple是一直待在救生筏上直至获救的。A、B、C三项都是船沉没之前发生的。]
4．B　[细节理解题。从第三段的第二句 ( http: / / www.21cnjy.com )“They also had a fishing line and a machine to make salt water into drinking water—two things which saved their lives.”可知，a fishing line和a machine救了他们的命。]
5．D　[推理判断题。从最后 ( http: / / www.21cnjy.com )一段可知the couple是太虚弱所以不能站起来，是由船长carried them onto his boat，而救生筏早在出事后的50天就坏掉了，而不是获救当天坏的。]
Period Two　Language Points
Ⅰ.1.sharp　2.monster　3.mysterious　4.sceptical
5．surface　6.claimed
Ⅱ.1.is cover ( http: / / www.21cnjy.com )ed with　2.am sceptical about　3.get close to　4.out of place　5.came into sight
6．made a claim on
Ⅲ.1.(1)declared　(2)claimed　(3)announce
(4)claim
[(1)claim通常指并没有证据的“宣称”。
(2)declare一般指在正式场合“宣布”官方的立场或态度等。
(3)announce泛指“宣布”某一消息或某事预示着……的到来。]
2．(1)calm　(2)quiet　(3)silent　(4)still　(5)calm
[(1)calm常指天气无风、海面无海浪；心情平静、无忧虑。
(2)quiet指人时表示生性安静、不易激动；用于环境时指没有干扰活动、没有喧闹声的寂静状态。
(3)still可以指环境的安静；也可以指姿势保持一动不动。
(4)silent寂静的，沉默的；不发音的，多指人默不作声，也可指字母“不发音的”。]
Ⅳ.1.D　[句意为：— ( http: / / www.21cnjy.com )—在森林里一定要小心。一些动物可能会攻击人。——好的，我会谨记在心的。attack攻击，袭击，符合句意。dislike不喜欢；destroy毁灭，破坏；attempt企图，试图。]
2．A　[句意为：没有组织声称他们为这次炸弹 ( http: / / www.21cnjy.com )爆炸事件负责。claim宣称，声称，符合句意。clear作动词时，意为清除，使……清楚；explain解释；speak发言。]
3．C　[句意为：没有怪物的真实照片， ( http: / / www.21cnjy.com )对于它的存在我们持怀疑态度。be sure/certain of/about...对……确信，有把握；doubt怀疑，但不能作形容词，均不合句意。be sceptical about怀疑某事，符合句意。]
4．B　[covered with snow作定语修饰mountain，相当于which was covered with snow。]
5．B　[guests和invite之间为逻 ( http: / / www.21cnjy.com )辑上的被动关系，故应用过去分词表示被动。C项表示将来被动；D项则表示被动进行。由last night可知选B项。]
6．B　[表示“有”时，要用there be 结构，而本句的主语是 socks，故选B项。]
7．C　[frightening令人害怕的，一般修饰物；frightened害怕的，一般修饰人。]
8．C　[seem 后接不定式，由句意知see的动作已经完成，故用 to have seen。]
9．A　[describe...as...把……当作……描述；greenish black黑绿色。]
10．B　[be likely to do...可能做……。]
Ⅴ.1.B　[细节理解题。由文章首句可知是黄石无与伦比的美丽使得美国政府决定建立黄石国家公园。]
2．D　[词义猜测题。根据上下文语义“唯恐狼群威胁到家畜，政府悬赏猎人去杀死狼，并以每头15美元的价格收购”可知选D项。]
3．B　[细节理解题。根据 ( http: / / www.21cnjy.com )文章第四段第三句中“Afraid that the wolves would threaten their livestock”可知人们担心狼群对家畜的危害是杀死狼的原因，故B项正确。由第二段可以看出geyser是间歇喷泉，所以A项错误；由第六段最后一句人们一生难得在黄石公园见一次狼可知狼数量还相当少，所以要恢复至原来的数目还需要很久，故C项错误；最后一段说黄石公园位列世界第六大自然景观，故D项错误。]
4．C　[推理判断题。由第六段第二句可知黄石公园的狼群有70%的狼有No.9的基因，即No.9这只狼到黄石公园是比较早的。]
5．B　[标题归纳题。通览全文可知，文章既涉及了黄石公园又涉及了黄石公园的狼群，B项可以概括全文的意思。]
Period Three　Integrating Skills
Ⅰ.1.extinct　2.adapt　3.evolve　4.disappeared　5.involve　6.related to
Ⅱ.1.(1)uncover　(2)uncover　(3)discovered
[(1)discover指发现客观事物的存在，特别是科学上的发现。
(2)uncover揭开……的盖子；暴露……的真相。]
2．(1)die out　(2)died away　(3)died down　(4)died out　　21*cnjy*com
[(1)die out灭绝，消失，可指生物、习俗、观念、种族等多个方面的消亡，侧重于彻底的消失。
(2)die away尤指声音、风、雨、光亮、势力、活动等逐渐消失、减弱或平息，但不排除用于其他方面的“消失”，强调的是“过程”。
(3)die down熄灭，平息下来，强调一个逐渐变弱的过程，较多用于情绪、气氛方面的变化。]
Ⅲ.1.died out　 ( http: / / www.21cnjy.com )2.throw light on his theory　3.adapt to　4.think about　5.come straight to the point
Ⅳ.1.D　[die out 绝迹；灭绝，符合句意。]
2．B　[adapt...to使……适应，符合句意。]
3．B　[survive幸存，生还。]
4．C　[make sense有意义；讲得通。句意为：虽然我把教授布置的书读了好几遍，但是我仍看不懂它。]
5．D　[句意为：——在我看来，每一个成功的 ( http: / / www.21cnjy.com )演说家总是能够开门见山，单刀直入。——我认为很多都是这样，但并不是每一个都这样。come straight to the point谈正题，开门见山。]
6．B　[句意为：当然，老师的解释会帮助弄 ( http: / / www.21cnjy.com )清疑难问题。throw light on阐明某事，帮助弄清楚，符合句意。come to the light为人所知；make light of...不把……当回事，拿……开玩笑；see the light出现；领悟。]
7．D　[从句子结构看，已经有了谓语动词gave，所以排除A、C两项；又因句中缺少主语，用动名词的复合结构来作句子的主语，故选D项。]
8．C　[句意为：出门工作的母亲们应当有灵 ( http: / / www.21cnjy.com )活的时间安排以便更容易地照顾小孩。heavy重的，严重的；smooth光滑的，顺利的；flexible可变通的，灵活的；complex难懂的，复杂的。根据句意选C项。]
9．B　[something在此表示“了不起的事情，非凡之事”。]
10．D　[句意为：他和他妻子有同一个心思 ( http: / / www.21cnjy.com )，他们都想让孩子上大学。mind心思，符合句意。soul灵魂；spirit精神；heart心脏。]
Ⅴ.1.C　[文章第一句便点明主题“ ( http: / / www.21cnjy.com )在全世界可以使用的水的总量一直是人们感兴趣的”，故引起下文“拥有泉水或溪流有时意味着控制”，故选C项。]
2．A　[因为下文提到like the desert所以此处为dry areas。]
3．C　[rich land富饶肥沃的土地，本句暗示出“人们控制水要比拥有富饶肥沃的土地还重要”。]
4．D　[uncommon不寻常的， ( http: / / www.21cnjy.com )本句中“not uncommon”即为“common”，来说明为争水而引起争斗或打仗是常事，可见水是重要的。]
5．A　[make laws to do...制订法律做……。]
6．B　[settlers外来殖民者。]
7．D　[as is known to us all众所周知，as作为关系代词引导非限制性定语从句。]
8．B　[由上文可知水并不是像人们想的那样用之不尽，取之不竭的，因此“there is not enough water...”。]
9．C　[the amount of...……的数量/总量，后加不可数名词。]
10．B　[require要求，根据上下文可知用水要有计划地节约使用。]
11．A　[根据上下文可知应选effectively有效地。]
12．D　[according to介词短语，意为“根据”。]
13．A　[the correct water supply forecast准确的水供应预测。]
14．D　[该空与下文below相对使用，故填above。]
15．B　[rising表示增加，此空需填不及物动词。]
16．C　[mountain tops山顶上。]
17．B　[make use of固定词组，意为“使用，利用”。]
18．D　[gathered收集到的，过去分词作定语。]
19．C　[press a button按开关。]
20．C　[用情态动词will更含有一种趋势，可能性。]
Period Four　Cultural Corner
Ⅰ.1.reputatio ( http: / / www.21cnjy.com )n　2.unpredictable　3.indicated　4.identity　5.destruction　6.generously　7.positive
8．Fortunately
Ⅱ.1.(1)because of/due to/owing to　(2)due to
(3)Thanks to　(4)Owing to/Because of　(5)due to
[due to，because of， ( http: / / www.21cnjy.com )thanks to，owing to这四个短语都有“由于，因为”的意思，都是介词短语，后面不可接从句。
(1)due to作状语、表语或后置定语，不用于句首。
(2)because of只能用作状语。
(3)thanks to只能用作状语，可以表达正面意思“幸亏”，也可用于讽刺口吻中(近于讽刺口吻的“感谢”)。
(4)owing to作状语，偶尔作表语。]
2．(1)cause　(2)reason　(3)excuse　(4)reason
[(1)cause指导致某种结果的“原因”是客观的，自然的。
(2)reason理由，指对某种行为的解释。
(3)excuse辩解，借口。]
Ⅲ.1.make sense　2.the ( http: / / www.21cnjy.com )symbol of　3.due to　4.is generous to us　5.lives up to his reputation
Ⅳ.1.B　[句意为：随着新年的到来，亲戚朋友相互祝愿来年发财。make a fortune发财，符合句意。]
2．C　[句意为：我们之所以来晚了是因为天气糟糕的缘故。due to因为，由于，后加名词或名词短语作宾语。]
3．C　[句意为：在西方一些国家的文化中据 ( http: / / www.21cnjy.com )说龙能引起死亡和毁灭。destruction毁灭，符合句意。instruction指导，指示，说明；instrument乐器，仪器；construction建造，建设。]2·1·c·n·j·y
4．D　[as是连词，其后应接句子。]
5．A　[句意为：众所周知，十字架是基督教的标志。symbol象征，标志，符合句意。]
6．B　[reputation声誉，名声，符合句意。]
7．B　[indicate表明，暗示，符合句意。]
8．A　[介词短语作宾语补足语，of great importance相当于important。]
9．B　[attentive主动的；p ( http: / / www.21cnjy.com )ositive积极的，正面的；negative否定的，负面的；opposite相反的。根据句意，及and stay optimistic知选B项。]21世纪教育网版权所有
10．A　[句意为：据说山东人在帮 ( http: / / www.21cnjy.com )助他人上很是慷慨。generous慷慨的，大方的；符合句意。general普遍的；概括的；gentle温柔的，温和的；positive积极的。]
Ⅴ.1.B　[细节理解题。从第一段中的“ ( http: / / www.21cnjy.com )...first as much as up to 700 pounds of honey”可知蜜蜂能向酒店提供蜂蜜。]
2．C　[细节理解题。从第 ( http: / / www.21cnjy.com )二段David Garcelon所说话中的“...find this to help the plants grow better”可知他们引来蜜蜂是为了帮助蔬菜更好地生长。]
3．A　[细节理解题。从第二段 ( http: / / www.21cnjy.com )中的“and I got in touch with the Toronto Beekeepers Cooperative”可知蜜蜂来自Toronto Beekeepers Cooperative。]
4．C　[细节理解题。从 ( http: / / www.21cnjy.com )第三段最后一句“who will make the ingredient in everything from the soups to salad dressings and ice cream.”可知C项的说法符合原文内容，故正确答案为C项。]
5．A　[推理判断题。从第三段第二句“60 ( http: / / www.21cnjy.com )to 70 percent of everything we eat has，at one stage in its development，been pollinated(授粉)by bees，so if you’re at all concerned about agriculture...then bees are really very important.”可知蜜蜂在农业中起了非常重要的作用。]
Period Five　Grammar and Writing
Ⅰ.1.may be　2.may phone　3.might have said
4．might/may be　5.may have known
Ⅱ.1.needn’t　2.used to　3.May　4.should　5.can not
Ⅲ.1.D　[杰克把他的父亲描述成一个意志坚强的人，此处表示的是对过去事实的肯定推测，所以用must have done结构。]
2．A　[由下半句“让我做噩梦” ( http: / / www.21cnjy.com )可以看出，“我”很后悔看了那部电影，表示做了不该做的事情，所以用shouldn’t have done结构。needn’t have done表示做了没有必要做的事情。couldn’t have done表示本不可能但已经做了某事；D项不存在这种用法。]
3．A　[needn’t have d ( http: / / www.21cnjy.com )one表示“本来没有必要做但已经做了”，符合句意。must have done只能用于肯定句；couldn’t have done表示本不可能但已经做了某事。]
4．C　[could have done sth.表示“过去本来能够做某事但是没做”。]
5．C　[表示对过去的肯定推测。]
6．C　[could用于疑问句中，表示推测。]
7．B　[后半句是在虚拟条件句“if that car had hit me”的前提下得出的结论。]
8．A　[第一空应填may，表示“允许”；第二空应填needn’t，表示“不必”。]
9．B　[前半句should h ( http: / / www.21cnjy.com )ave come earlier本该早点来；后半句might have needed some help可能需要帮助，这样上下两句才通顺。]
10．D　[由yesterday可知A、C两项错误；should应该，理应；might或许，可能。由语境知D项正确。]
11．B　[句意为：我们或许还没有证明是伟大的探险者，但我们已取得了在过去的10年里的最伟大的进展。根据句意可知B项正确。]
12．D　[句意为：——彼得怎么啦 ( http: / / www.21cnjy.com )？——当他从老师办公室里出来时他就哭了。他准是挨老师训斥了。由“He was seen crying...”可知，此处表示对过去事情的肯定推测，故用must have done结构。]
13．D　[句意为：太遗憾了！鉴于他的 ( http: / / www.21cnjy.com )能力和经验，他本可能做得更好。need have done本来有必要做(而没做)；must have done是对过去发生的事情的肯定的推测，表示“过去一定做了”；can have done是对过去发生的事情的不肯定的推测；might have done表示“本来可以”。]
14．A　[may表达推测之意，意为“可能”。]
15．C　[shouldn’t have done sth.表示“本不该做而做了某事”。]
Ⅳ.1.B　[主旨大意题。全文主要介绍的是对购物癖的新认识：它是一种心理疾病。文章对购物癖的症状、病因、病理及治疗措施进行了具体介绍。]
2．C　[细节理解题。根据第三段内容可知选C项。]
3．D　[词义猜测题。此处的it实际 ( http: / / www.21cnjy.com )上是指“Compulsive shoppers frequently buy more than they can afford or more than they need”这一状况。]
4．B　[细节理解题。根据最后一段可知选B项。]
5．D　[推理判断题。根据第六 ( http: / / www.21cnjy.com )段“Both activities provide an immediate kind of kick and you feel a bit better...”可推出答案。]
Ⅴ.【参考答案】
Dear editor，
I want to tell ( http: / / www.21cnjy.com ) you a strange thing. It was cloudy that evening. I was riding through a small dark alley after evening classes in school when suddenly light appeared in front of me. I tried to see it clearly. Then I found out that it was a triangle flying machine which I was sure I had never seen before. Not until a small yellow creature with three eyes came out did I realize what happened. The creature looked like the alien in the famous movie ET.I was not able to say a word.“Is it an alien？”I asked myself.T hen the creature asked me how to get to the biology museum. I can’t remember what I said to him，but I remember that he smiled at me and said goodbye to me politely.
Do you believe me？I c ( http: / / www.21cnjy.com )an’t believe myself，either. It may sound amazing，but it did happen to me.
Yours sincerely，
Li Hua
21世纪教育网 -- 中国最大型、最专业的中小学教育资源门户网站。 版权所有@21世纪教育网