人教版八年级英语下册Unit 7 What's the highest mountain in the worldSection B习题课件(共17张PPT)

(共17张PPT)
Unit 7 What's the highest mountain in the world
Section B
第4课时（1a~1d）
一、根据句意及汉语提示填写单词。
1.You should eat ______（更少的） meat if you want to be healthy．
less
2.The box _________（重） three kilos．
weighs
3.As an _______（成年人）， you should make the right decision．
adult
4.—When is your __________（生日）？
—It’s on June 3rd.
birthday
5.There are a few birds flying above the ____________（海洋）．
ocean/sea
二、按要求完成句子。（每空一词）
1. A baby panda has no teeth when it is born. (改为同义句)
A baby panda has no teeth ______ _______．
at
birth
ten
2.它每天吃十公斤的食物。（完成译句）
It eats ______ _____ _____ food a day．
kilos
of
to
3. 3. 一只大熊猫能够活到20到30岁。（完成译句）
A panda can _____ _____ _____ 20 to 30 years old．
live
up
4.大象比熊猫重好多倍。
An elephant weighs ________ ________ ________ than a panda.
many
times
more
5.我比你高4厘米。
I’m _________ _____________ ________ than you.
4/four
centimeters
taller
三、阅读理解。
( )1. How long does this special day last
A. 6 hours. B. 6.5 hours. C. 7 hours. D. 7.5 hours.
( )2. Which of the following can be put into the blank “”？
A. Sports games B. Different shows C. A surprise party D. A speech
( )3. Match the opening hours with the events and choose the right answer.
①9:40 a.m. a. Enjoy the black & white fashion show.
②10:35 a.m. b. Listen to a talk about pandas.
③10:50 a.m. c. Enjoy the songs and poems.
④11:50 a.m. d. Take part in the art competition.
A. ①—d;②—b;③—c;④—a
B. ①—b;②—d;③—a;④—c
C. ①—b;②—d;③—c;④—a
D. ①—d;②—b;③—a;④—c
D
B
C
第5课时（2a~2e）
一、用括号中所给单词的适当形式填空。
1.Of the two girls, I find Lucy ______________（clever）.
the cleverer
2.John’s parents have four sons, and he is the ___________（young） child.
youngest
3.The old woman looks much __________（happy） now.
happier
4.Winter is _____________（cold） of the four seasons. But I like it _______（well）.
the coldest
best
5.The boy is not so ____________（interesting） as his brother.
interesting
6.The food is ___________________（delicious） of all.
the most delicious
7.The Yellow River is the second _________（long） river in China.
longest
8.I think English is one of ____________________（important） subjects in middle school.
the most important
二、单项填空。
( )1.—I’m ______ , Mom. Can I have something to eat
—OK. Here is some bread.
A.heavy B.full C.hungry D.thirsty
C
( )2.They offered her a house for $100,000, ______ it was worth.
A.as much as twice B.as much twice as C.as twice much as D.twice as much as
D
( )3.Do you know if ______ a meeting next Monday
A.there was going to have B.there was going to be C.is there going to be D.there will be
D
( )4.The population of the world in the 20th century became much ______ than that in the 19th century.
A.bigger B.larger C.greater D.more
B
( )5.The house is too small for his family ______ .
A.to live in B.living in C.live in D.lives in
A
三、阅读理解。
A new study finds that plants communicate with one another to warn of danger．
We often consider plants as the furniture（家具） of the natural world. They don’t move; they don’t make sounds; they don’t seem to act on anything. In fact， plants talk to each other all the time. And the language is a chemical（化学物质）．
Over the years， scientists have reported that different types of plants， from trees to tomatoes， give out（散发） chemicals into the air to help neighboring plants. These chemical warnings can spread information about one plant’s disease or infestation（虫害）， so other plants can protect themselves. But how plants receive and act on the information exactly is still mysterious（神秘的）．
In this week’s Science Magazine， researchers in Japan offered some explanations（解释）. They have found out one chemical message and traced it all the way from beginning to end．
The scientists looked at tomato plants infested（寄生） by a common pest（害虫）. To start out， they grew plants in two separate plastic spaces connected by a tube（管子）. One plant was infested and placed upwind（逆风地） and the other was not infested and placed downwind（顺风地）. The downwind plants were later exposed（暴露） to the pest. The results showed that plants near sick neighbors before were able to protect themselves better against the pest．
They found one chemical appeared more often in the exposed plants. The chemical is called HexVic. The scientists discovered where HexVic came from， and put it over healthy plants. Those plants were then able to produce HexVic. Researchers made sure that plants that were not infested could fight off bugs and diseases. How do they know when to protect themselves？ They are warned first by their friendly plant neighbors．
It is not a simple story， and it may be happening in more plants than tomatoes. It may also be happening with more chemical signals that are still unknown to us. In a word， we know that plants not only communicate， but also look out for one another．
( )1.What does the underlined word “traced” in the fourth paragraph probably mean？
A.Reported. B.Followed. C.Doubted. D.Developed．
( )2.For scientists， which are the right steps to watch tomato plants infested by a pest？
① Place the infested plant upwind．
② Place the plant that was not infested downwind．
③ Expose the downwind plants to the pest．
④ Grow plants in two separate plastic spaces connected by a tube．
A.③①②④ B.①④③② C.④①②③ D.④②①③
( )3.You can put the sentence “The resear-chers also studied leaves from exposed plants and unexposed plants.” at the beginning of ______ ．
A.Paragraph 3 B.Paragraph 4 C.Paragraph 5 D.Paragraph 6
( )4.What would be the best title for this passage？
A.Communicating Plants and Terrible Diseases. B.Talking Plants and Friendly Warnings.
C.Protecting Plants and Clear Information. D.Growing Plants and Mysterious Chemicals.
B
C
D
B
第6课时（3a~Self Check）
一、请先阅读下面短文，掌握其大意，然后用方框中所给的词的适当形式填空。（每个词限用一次）
move enough find rain make
use they carry trouble friendly
You may think there is nothing but sand in the desert of the world, but it is not true. In the desert we can 1.______ stones. We can see hills, too. There is a little 2.______ in the desert, but it is not 3._________ for most plants.
The animals are 4.________ to the desert people in many ways. The desert people eat the meat and drink the milk of the animals. They use their skins to 5.________ shoes, bags and even tents（帐篷）. They use the camels（骆驼） for 6.__________ things.
find
rain
enough
useful
make
carrying
The people of the desert have to keep 7._________ from place to place. They must always look for grass or desert plants for their animals. They usually live in the tents. When there is no more food for their animals, they take down their tents, put 8. ________ on the camels and move to another place. The desert people are very 9.__________. No man in the desert would ever refuse to help the people in 10._________ and give them food and water.
moving
them
friendly
trouble
二、阅读短文，根据短文内容从下面的方框中，选择五个适当的句子还原到文中，使短文意思通顺、结构完整。
The earth is about 4，600 million years old. We humans have lived on the earth for only about 35，000 years， but during this period we have changed our planet a lot in many ways. 1. ____
All over the world， people have cut down millions of trees， so more and more kinds of animals and plants are disappearing. In big cities， cars and buses have polluted the air. Factories have also polluted the land and the water．
2. ____ It is important to the earth. But now air pollution is destroying it and that has made a very big hole in the ozone layer（臭氧层）. 3. ____ This is very dangerous because it can cause cancer．
Carbon dioxide（ CO2） in the air has increased a lot. 4. ____ It has formed a“blanket （毛毯）”around the earth. 5. ____ This makes our earth become warmer and warmer. Therefore， this causes the level of the ocean to rise．
All these problems are very serious. We must do something to stop our earth from being polluted．
C
F
B
G
A
A. The heat from the sun can’t escape, so the temperature is rising.
B. Too much harmful light from the sun passes through it and reaches the earth directly.
C. Some things we’ve done are very good for the earth while some are bad.
D. People know nothing about that.
E. People should take actions to stop them.
F. Around the earth, there’s a special kind of oxygen（氧气） called “ozone（臭氧）”.
G. It mainly comes from different kinds of burning materials.
三、书面表达。（请自备作文纸进行写作）
如今，很多野生动物濒临灭绝。假如你是苏珊，英语老师要求你在明天的英语课上，以 “Let’s Protect the Endangered Animals!”为主题进行英语演讲，号召大家保护这些动物。请你根据下面的图表信息，用英语准备一篇演讲稿。
要求：1. 演讲稿要包括图表中给出的所有提示，可适当拓展；
2. 词数不少于80，开头已给出，不计入总词数。
参考词汇: die out 灭绝; nature reserves 自然保护区
Hi, everyone! I’m Susan. It’s my turn to make an English speech on “Let’s Protect the Endangered Animals! ” Hope you all can enjoy it.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
As we all know, wild animals are part of the nature, but recently, the number of wild animals is getting smaller and smaller. Some of them are even dying out. The main reasons are that people cut down so many trees that they lost their homes and people hunt or kill a lot of them for their fur or to make money. We should realize the importance of saving these endangered animals and take actions to protect them. For example, we should stop people from cutting down the trees and we should plant more trees so that there will be more forests for them to live in.And we should also set up nature reserves to protect wild animals and the environment they live in.