Module 6 Unexplained Mysteries 基础落实（高考一轮复习）

课件93张PPT。
Ⅰ.高频单词思忆
1. She started to ________ (攻击, 袭击) the burglar with a piece of wood.
2. These two brothers decided to go to America to try their ________ (运气).
3. It is ____________ (吓人的) to think how easily children can be hurt.
4. The custom of arranged marriages still ______ (存在) in many countries.基础落实Module 6 Unexplained Mysteries
of the Natural Worldattackfortunefrighteningexists5. Many scientists remain _________ (怀
疑的; 不相信的) about the value of this
research program.
6. Dinosaurs have been _______ (绝种的,
消亡了的) for millions of years.
7. Darwin believed that human beings
_______ (进化, 演变) from apes.
8. She had already begun to establish a
__________ (名声, 名誉) as a writer.
9. My son ________ (使适应) himself
quickly to his new surroundings.
10. That old lady ________ (声称) that
she had a lot of money. skepticalextinctevolvedreputationadaptedclaimedⅡ.重点短语再现
1. ______ to适应→______ oneself to调整;
使适应 →______ one’s advice接受某人的
建议
2. die ____灭绝→die ______(声音、光线
等)慢慢变弱; 渐渐消失→die ____相继死
去→be ______ for渴望
3. throw light ___ 弄清楚;阐明→throw
oneself ____ sth.积极投入到某事中去→
throw sb. into ______把某人投入监狱
4. come ________ to the point开门见山→
that’s the ______ 那才是重要的→point
____指出adaptadjustadoptoutawayoffdyingonintoprisonstraightpointout5. ___ to由于→______ to幸亏; 由
于→_______ to因为; 由于
6.stick ___突出,伸出→stick __ 坚持
7. ________ in the news再次成为
新闻
8. get close __ 靠近;接近→a _____
game势均力敌的比赛
9. be skeptical ______ 对……表示
怀疑
10. a ______ of national identity民
族感 duethanksowingouttobe backtocloseaboutsenseⅢ.典型句式运用
1. Some experts believe it is due to
the animals the myths grew out of.
一些专家认为这些神话故事是
由于动物而产生的。
短语due to表示原因
计划的失败是由于管理
不善。
The failure of the scheme was
due to the bad management. 考点提炼句子仿造2. He claims to have seen a round black creature moving quickly through the water.
他声称看见一个黑黑的、圆圆的动物在水中快速游动。
claim to do结构中, 不定式的完成时态
医生声称已经找到了该疾病的治疗方法。
Doctors claimed to have discovered a cure of this disease. 考点提炼句子仿造3. They say that the low-temperature lake is unlikely to be able to support such large living creatures.
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。
be unlikely to do sth.的用法
这些措施对制止经济危机可能没有用处。
These measures are unlikely to be helpful in preventing the economic crisis. 考点提炼句子仿造4. It is 2,189 metres high and
covers an area of about ten square
kilometres.
它海拔2 189米, 占地约10平方公
里。
cover作为动词的含义和
用法
这笔钱付学费够吗?
Is the money sufficient/enough to
cover the tuition? 考点提炼句子仿造5. The dinosaurs may have stopped evolving, and been unable to adapt to changes in the climate.
恐龙可能停止了进化, 也就可能不能适应气候的变化。
“情态动词+have done”表示对过去情况的猜测
他的餐馆总是爆满, 他一定挣了不少钱。
His restaurant is always full and he must have made a great deal of money. 考点提炼句子仿造
重点单词
1. attack v. 攻击;开始;(疾病)侵袭;
n. 攻击;进攻;病情发作(可数名词)
It often gets angry and will
attack anyone who goes close to it.
它很容易发怒并会攻击任何靠近
它的人。 (回归课本P51)
?导练互动观察思考
She started attacking the burglar with a piece of wood. 她开始用一块木头猛打进屋行窃的小偷。
The professor died of a heart attack yesterday. 昨天教授死于心脏病。
The soldiers made a strong attack on the enemy. 战士们向敌人发起猛烈进攻。 归纳拓展
launch/make an attack on 攻击
under attack 在攻击下; 受到攻击
air attack 空袭
a heart attack 心脏病突发
be attacked with a disease 患病,害病
open an attack 开始进攻
have an attack of (疾病)发作 活学活用
After he became conscious, he
remembered ____ and ____ on the
head with a hammer.
A. to attacked; to be hit
B. to be attacked; to be hit
C. attacking; be hit
D. having been attacked; hit
解析 根据句意知是“他记得被袭
击, 头被锤子砸了一下”。
remember doing sth.记得做过某事。 D2. claim vt. & vi. 声称; 要求;
n. 要求; 主张; 断言
Xue Junlin, a local
photographer, claimed that its
head looked like a horse.
(回归课本P52)
薛军林, 一位当地的摄影师,
声称那个怪兽的头看起来像马
头。
?观察思考
He claimed that he had done the work without help.
他声称未得到帮助就完成了此项工作。
The government would not even consider his claim for money. 政府甚至不考虑他的赔款要求。归纳拓展
claim sth. back 索回某物
claim to do/that clause 声称……
lay claim to sth. 提出对……的所有权
claim to be/as 声称是
claim to have done 声称做过某事
make a claim for... 提出赔偿要求
It is claimed that... 据说…… 活学活用
The young girl claimed ____
the robber in the street
yesterday.
A. to see B. seeing
C. to have seen D. saw
解析 claim to do...声称……, 分
析句子知see动作已经完成, 所
以用to have seen,故C项正确。 C3. calm adj. 平静的; 镇静的;
v. (使)平静; (使)镇定
Mr. Li Xiaohe said that he and
his family were able to see the
monster clearly because the
weather was fine and the lake was
calm.
李晓和先生说之所以他和他的家
人能够清楚地看到怪物是因为天
气晴朗, 湖面平静。(回归课本P52)
?观察思考
The high wind passed and the sea was calm again. 大风过后, 大海重又风平浪静。
You should keep calm even in face of danger. 即使面临危险, 你也应当保持镇静。
Her attempts to calm them down only made matters worse. 她设法使他们平静下来, 不想却适得其反。 归纳拓展
keep calm 保持镇静
calm down 平静下来; 镇静下来
the calm before the storm暴风雨前的平静 易混辨异
calm / quiet / still / silent
calm主要用于气候、海洋
等风平浪静的;也可指人“安静
的, 镇静的”。
(2) quiet指没有吵闹、嘈杂的
声音, 侧重声音低, 甚至无声。
(3) still指保持某种姿势一动不
动, 也可以指环境的安静。(4) silent强调“没有声音或默不作声”。它们都可以和keep搭配运用, 但含义有差别。keep calm 保持镇静(不慌张); keep silent 保持沉默(不说话); keep quiet 保持安静(别吵); keep still 保持静止(别动) 活学活用——用calm, quiet, still, silent填空
(1) The children went out and the room was _______.
(2) The doctor did what he could to make the girl ______.
(3) They lived a ______ life in the
countryside.
(4) Stay ______ while I take a photo for you. silentcalmquietstill4. adapt vt. 使适应; 改编
If you can adapt to
something, you can change in
order to make the situation
better.
如果你能够对某事物适应,
你可以改变它来使情况变得更
好。 (回归课本P55)
?观察思考
Children can adapt quickly to
new surroundings.
儿童能很快适应新环境。
The film is adapted from a novel.
这部电影由一部小说改编而成。
When you go to a new country,
you must adapt yourself to new
manners and customs.
当你到一个新的国家时, 你必须
使自己适应新的风俗习惯。 归纳拓展
adapt to (doing) 适应(做)
adapt for使适合于;使……适应
adapt from 根据……改写/改编
adapt oneself to sth. 使某人适应/习惯于……
adapt sth. to 使某事物适应或适合
be well adapted to 特别适应 易混辨异
adapt/adjust/fit/suit/match
五者都含有“适合,适应”的意思。
adapt指“修改或改变以适
应新条件”。
You should adapt yourself
to the new environment.
你应该适应新环境。(2) adjust指“调整, 调节”使
之适应。
You can’t see through the telescope until it is adjusted to your eyes.
你把望远镜调节到适合你
的目光之后, 你才能看得清。(3) fit多指“大小适合”, 引申为“吻合”。
The shoes fit me well.
这鞋我穿正好。
(4) suit多指“合乎要求、口味、性格、情况”。
No dish suits all tastes.
众口难调。(5) match指“大小、色调、形状、
性质等相配或相称”。
A red jacket doesn’t match green
trousers. 红上衣与绿裤子不相配。
adopt v. 收养; 采纳
The old woman adopted that
orphan as her son.
那位老妇人收养那位孤儿作
她的儿子。 注意活学活用
Most students have little
difficulty ____ college life.
A. to adapt B. adapting
C. adapting to D. adapted to
解析 adapt to sth.适应……;
又have difficulty (in) doing sth.
做……有困难,故C项正确。 C5. fortune n.［U］运气;机会
［C］命运;财产;前途
So the Chinese dragon
was a bringer of good
fortune .
因此, 中国的龙是可以带
来好运的。 (回归课本P59)
?观察思考
He went to Australia and soon made a fortune. 他到澳大利亚之后不久就发财了。
I had the good fortune to be chosen for a trip abroad. 我真幸运, 被选中出国旅行。
Everyone is the architect of his own fortune. 每个人都是自己命运的创造者。 归纳拓展
fortunate adj. 幸运的, 运气好的
fortunately adv. 幸运地
in doing sth.
to do sth.
have the fortune to do sth.有幸做某事
make a fortune 发财
seek one’s fortune 外出找出路
try one’s fortune 碰碰运气
come into fortune 继承一笔遗产
tell one’s fortune 给某人算命 ｛be fortunate在……方面运气好｛｛｝活学活用
That year, many people from
Shandong Province went to
Northeast China for lacking
food, to ____ their ____.
make; fortune
B. make; luck
C. seek; fortune D. seek; luck
解析 seek one’s fortune 寻找
出路, 符合句意。C重点短语与句型
6. die out 灭绝; 逐渐消失
Perhaps too much fighting caused the
dinosaurs to die out.
也许是太多的战争使得恐龙绝迹。 (回归课本P56)
?观察思考
Many old customs are gradually dying out. 许多旧习俗都在日渐消失。
The music died away as we closed
the door. 由于我们关上门了, 音乐声
变弱了。
I am dying for a cup of coffee.
我真想喝一杯咖啡。
They had to watch their children die off through lack of food. 他们不得不眼睁睁地看着孩子们因为没有东西吃而一个个死掉。 归纳拓展
die hard 难改变; 难消灭
die of/from 因……而死
die away 变弱; 渐渐停止; 渐渐消失
die down 变弱; 渐渐平息, 缓和
die off 相继死去
be dying for/to do sth. 渴望/极想……
as true as a die 非常老实; 绝对真实
可靠
The die is cast.［谚］木已成舟。
(指事情已经决定, 再也不能改变。) 活学活用
If we don’t take steps, the
Tibetan antelopes and pandas will
____ some day like dinosaurs,
which is quite terrible.
A. die out B. die away
C. die down D. die off
解析 根据句子的含义和like dino-
saurs知是“绝迹”, 故选A。die out
绝迹;绝种;die away变弱; die down
变弱;渐渐平息;die off相继死去。 A(2) It took a long time before the excitement died down.
过了好长时间, 兴奋的情绪才慢慢平静下来。 7. throw light on 阐明某事; 帮
助弄清楚
If you throw light on
something you make it easier
to understand.
如果你阐明某事, 你就会使得
它变得容易理解。
(回归课本P58)
?观察思考
Recent research has thrown new light on the causes of the disease. 最近的研究可以使人进一步了解导致这种疾病的原因。
More information has been brought to light since scientists have been able to use new
technology to help study things from the past. 自从科学家能利用新技术以帮助研究过去的事情以来, 已经有了更多的信息。 归纳拓展
throw light on=cast light on
阐明某事; 帮助弄清楚
come to light/bring...to light
为人所知/被披露出来
light up 照亮; (脸上或眼中)流露
出喜悦/兴奋
make light of 轻视
by the light of nature 本能地; 自然而然地
in the light of 借助; 根据 活学活用
Though the problem was difficult to understand, what he said ____
it.
A. made light of B. threw light on
C. came to light D. saw the light
解析 throw light on帮助弄清楚;阐明; make light of轻视; 看不起; come to light披露; see the light看到了希望。 B8. due to 因为; 由……引起; 预
定到的; 应得的; 应给予的
Some experts believe it is due
to the animals the myths grew
out of.
一些专家认为这些神话故事
是由于动物而产生的。
(回归课本P59)
?观察思考
The professor is due to make a speech this Friday. 教授预期在这个星期五作演讲。
Have they received the money due to them? 他们收到应给予他们的那些钱了吗？
The firm’s success is largely due to the new manager.
公司的成功在很大程度上归功于新经理。 归纳拓展
because of/owing to/as a result of/
on account of 由于
thanks to 由于; 幸亏
become due 到期, 满期
for a full due 完全地, 彻底地; 一
劳永逸地
due to 作“由于”讲时, to为介
词; 作“到期, 预定, 预期”讲时, 后
接不定式。 注意活学活用
The old man said the accident ____ careless driving, so a lot of money ____ be paid by the driver.
A. was due to; was due to
B. due to; was due to
C. is due to; has due to
D. is due to; was due to
解析 第一空处的due to表示原因;第二空处的due表示应该做某事。 A9. He claims to have seen a round black creature moving quickly through the water. 他声称看见一个黑黑的、圆圆的动物在水中快速游动。
?句式分析
句中的to have seen是不定式的完成式, 表示该动作在句子谓语动词claim前已经发生并完成。
You’d better tell your father the truth. He seemed to have known the matter. 你最好告诉你父亲事情的真相。他好像知道这件事了。 归纳拓展
不定式通常有三种形式:
一般式:to+动词原形。表示
与主动词同时发生或发生在主
动词后的动作。
(2) 进行式:to be doing。表示
与主动词同一时间发生, 并且
正在进行的动作。
(3) 完成式:to have done。表示
该动作发生在主动词之前。活学活用——用所给动词的适当形式填空
(1) In the e-mail, I wrote “I expect
_______ you, my old friend”. (see)
(2) He seemed ______________ a novel when I came into the classroom. (read)
(3) Bob isn’t performing. He is said _____________ the stage as he has become an officer. (leave) to seeto be readingto have left
【例1】Dogs have a very good ___ of smell and are often used to search for survivors in an earthquake. (浙江高考)
A. sense B. view C. means D. idea
解析 a sense of smell嗅觉。句意为:狗嗅觉灵敏, 经常被用来搜寻地震中
的幸存者。
课文原文
However,across the border in Wales,the red dragon which appears on the Welsh flag is a positive symbol, indicating strength and a sense of national identity.考题回扣A【例2】It ____ have been Tom that parked the car here, as he is the only one with a car. (上海高考)
A. may B. can C. must D. should
解析 由后句“因为他是唯一有车的人”可知, 这是一个非常肯定的推测,故用must。A、B两项是并非十分肯定的推测; 而should have done是“本应该做某事而实际未做”, 不合题意。
课文原文
The dinosaurs might have been
killed by volcanic eruptions.C【例3】Scientists have many theories
about how the universe ____ into
being. (北京高考)
A. came B. was coming
C. had come D. would come
解析 宇宙形成是过去的事情, 故用一
般过去时态。
课文原文
Mr. Li Xiaohe said that he and his
family were able to see the monster
clearly because the weather was fine
and the lake was calm. A【例4】The population of Jiangsu ____
to more than twice what it was in 1949.
The figure is now approaching 74 million.
(江苏高考)
A. has grown B. have grown
C. grew D. are growing
解析 本句中谈论的人口的增长是从1949
年一直到现在的人口的增长, 所以应该用
现在完成时态。又因为population作主语
时谓语动词应该用单数, 所以此题选A。
课文原文
There have been reports of monsters in
Lake Tianchi since the beginning of the
last century,...A【例5】I like Mr. Miner’s speech; it was clear and ____ the point. (辽宁高考)
A. at B. on
C. to D. of
解析 to the point中肯,切题。
课文原文
If you come straight to the point you say what you want to say.C写作技能
让句子靓起来的十一招
对低级句型的改造可以迅速达到给我们的句子润色, 让我们的句子靓起来的目的。
1. 强调句
可以轻松地将时间、地点、原因、方式等类型的状语从句转变为强调句。如：It was not until I arrived home that I realized I had left the bag on the shop counter. 2. 倒装句
只要句中有介词短语或状语从句, 便可将其提前, 变成倒装句。如：
Only when he told me the truth did I realize that I had misunderstood him.
3. with的复合结构
可以将状语从句或并列句中的其中一个分句变成with的复合结构。如：
With heavy burden on mind, he felt greatly stressed.4. 巧妙地使用非谓语动词
可以将状语从句或并列的动词简化为非谓语动词。
如：
Dressed in a proper way, you’re more likely to leave
a good impression on the interviewers.
5. 恰到好处地使用被动句：使语言简洁生动
主语除nothing, anything, everything等不定代词之外, 在主语不清晰或不重要的情况下更应使用被动语态。如：
Something must be done to stop factories pouring waste water directly into rivers.6. 高级定语从句
若定语从句中的动词带有介词, 只需将介词移至先行词后。如：
We came to a place to which they had never
paid a visit before.
7. 进行时态
有时会含有一定情绪, 尤其要使用always这样的富含感彩的副词。如：
I am always feeling terrible when I take a bus.
8. what引导的名词性从句将动宾结构转化为此结构如：
What he gave me was not only a Christmas
present but also a heart full of love.9. “数词 + 名词”变为“as many as + 数词 + 名词”
As many as ten years ago, my hometown used to be covered by forests.
10. 适当使用插入语
如I guess, however, in a way, certainly, in my
opinion, probably, generally speaking, believe it or not, besides, what’s more等。
11. 把简单句改成复合句
适当的时候把两个简单句改成“too...to...”或者“so...that...”等高级一点的复合句。如：
I was very tired. I couldn’t keep up with them. →I was so tired that I couldn’t keep up
with them.或：I was too tired to keep up with them.即时练习——使用上述技巧，合并或改写下列句子
1. I realized the importance of English when I entered senior high school.(强调句)

2. We can live a happy life only by this means. (倒装)
3. He fell asleep. The lights were still on. (with结构)
It was when I entered senior high school that I realized the importance of English. Only by this means can we live a happy life. He fell asleep with the lights on.4. When I heard that, I was much moved.(非谓语动词)
5. They carried out a survey among 260 students. (被动语态)
6. I felt discouraged when I failed my exams. (时态表强调)
Hearing that, I was much moved. A survey was carried out among 260 students. I was always feeling discouraged when I failed my exams.7. They were faced with many problems. They didn’t lose leart. (非谓语动词)
8. It was getting dark. And it began to rain. (插入语)
9. He worked very hard. He made great progress in his study. (改为复合句)
Faced with many problems, they didn’t lose heart. It was getting dark. What was worse, it began to rain. He worked so hard that he made great progress in his study.10. He offered me a piece of advice that I should cheer up and start all over again.
(用what结构)
11. I got on a bus. There were already too many people on it. (定语从句)
12. 50% of the students surveyed choose super stars as their idols. (强调数字)
What he offered me was a piece of advice that I should cheer up and start all over again. I got on a bus on which there were already too many people. As many as 50% of the students surveyed choose super stars as their idols.
Ⅰ.品句填词
1. Beneath that apparently calm _______ (表面) is a man of fierce temper.
2. Her attempt to _____ (使平静) them down only made matters worse.
3. He soon acquired a __________ (名声) as a first-class cook.
4. It is believed that setting off the
firecrackers will bring good _______ (运气) in the coming year.自主检测surfacecalmreputationfortune5. After the battle, both sides _______ (宣称) victory.
6. My daughter ________ (适应) herself quickly to her new surroundings and
made several friends.
7. The wind was blowing _________ (猛烈地) outside. You’d better put your coat on.
8. It’s very _________ (慷慨) of him to lend his new car to you.
9. He is ___________ (怀疑的) about the present economic situation.
10. A red sky at night __________ (表明) that the following day will be fine. claimedadaptedfiercelygeneroussuspectedindicatesⅡ.短语运用
1.The dog ________________ the thief.
2. When travelling in a car, never ___
your head ____ of the car window.
3. Black people ________________
equal rights with the whites.
4. __________ and tell me what happened.
5. The new schoolyard ______________
600 mu.throw light on, come straight to the point, at first sight, due to, make an attack on, die out, calm down, stick out, cover an area of, make a claim for made an attack on stickoutmade a claim forCalm downcovers an area of6. The young man fell in love with the girl ______________.
7. ________ the bad weather, the opening ceremony had to be put off.
8. With the development of society, some old traditions are __________.
9. The new facts ___________________ the matter.
10. There is no more time left. We should __________________________ quickly. atfirst sightDue todying outthrew some light oncome straight to the pointⅢ.翻译句子
1. 他声称这件事不是他做的。(claim)
He claimed that he hadn’t done it.
2. 政府可能要采取措施以解决这
种问题。(likely)
It’s likely that the government
will take measures to solve this
kind of problems.
3. 我们定于明天出发。(due to)
We are due to leave tomorrow.4. 警察发现要使足球迷们平静下来是很难的。(calm down)
The police found it difficult to make the football fans calm down.
5. Our math teacher threw light on the important points so we worked out the difficult question.
我们数学老师阐明了重点, 所以我们做出了那道难题。 Ⅳ.单项填空
—We’d like you to start work
tomorrow if possible.
—I’m sorry, but I can’t possibly
start until Monday. ____?
A. Do you agree with me
B. Is that a good idea
C. Do you think I’m right
D. Will that be all right
解析 Will that be all right?这行吗？
用于征求对方的同意。因为无法按对
方的意见去做, 所以问这样行不行。 D2. They ____ all the details of the plan time and again to make sure that the project would go smoothly.
A. got through
B. went through
C. got over D. dipped into
解析 go through浏览; 仔细看。由句中的“to make sure that...”知B项正确。 B3. Our book’s not ____ be
published until December.
A. due to B. planned to
C. owing to D. thought to
解析 be due to do sth.预期做
某事。根据句意 “我们的书预
计要到12月份才能出版”知选
A项。owing to由于; B、D两
项均不符合句意。A4. A flashing red light ____ that a stretch of road was undergoing repairs.
A. indicated B. advised
C. connected
D. symbolized
解析 indicate表明。advise建议; connect连接; symbolize象征。 A5.The book said that the hero was killed by reactionaries but that his spirit would never ___.
A. die away B. die down
C. die off D. die out
解析 die out“消失; 消逝”符
合题意。die away(风、声音
等)渐息; 减弱; die down熄灭; die off相继死去。 D6. —I want to buy a pair of shoes. Can you give me some advice?
—The store at the corner has an excellent ____ for fair dealing.
A. reputation B. place
C. shopkeeper D. benefit
解析 reputation名声, 名誉; place地方; shopkeeper店主; benefit好处。A7. The new book my mother bought for me is ____ to me in my English study.
A. of a great help
B. a great help
C. with great helpful
D. great help
解析 be of great help=be a great help很有帮助。 B8. After the teacher made an explanation, Tom, ____, corrected his paper.
A. realized his mistake
B. realizing his mistake
C. he realized his mistake
D. his mistake realizing
解析 分析句子结构可知主句的谓语动词是corrected, realize只能在句中作状语, 与Tom是主谓关系,故用v.-ing形式。 B9. If no one ____ the lost bag,
the person who found it can
give it to the Lost and Found
Department.
A. claims B. demands
C. requires D. deserves
解析 句意为:如果没有人认领这
个丢失的包, 发现包的人可以把它
送到失物招领处。claim声称; 索
回; 认领; demand要求; require需
要; deserve应该得到。 A10. The number 5·12 is a special number, ____, I think, that will be remembered by Chinese
people forever.
A. what B. it
C. which D. one
解析 one作number的同位语。 D11.When he became old, he was ____ with lung disease.
A. covered B. faced
C. attacked D. traded
解析 attack可用于指“(疾病等)袭击, 侵袭”。be covered with用……覆盖；be faced with面临; 面对; trade with和……做生意。 C12. He left France, preferring to give up the ____ that would one day come to him and went to live in England.
A. wealth B. possession
C. fortune D. treasure
解析 fortune财富, 财运。wealth价值, 财产; possession意为“个人财产”时应用复数形式; treasure财宝。C13. The custom of arranged marriages still ____ in many parts of China.
A. exists B. appears
C. lives D. lies
解析 exist存在; appear出现; live生活; lie位于。由句意知A符合句意。 A14. Ladies and gentlemen, let’s keep the meeting short and to ____ so as not to waste everyone’s time.
A. the opinion B. the note
C. the key D. the point
解析 to the point切题; 直奔主题。 DD15. I believe the teacher’s explanation will _____ this
puzzling problem.
A. throw light on
B. come to light
C. see the light
D. make light of
解析 由句意可知, 此处指“使问题容易理解”, 故选A项。B、C两项后不能加名词作宾语; D项指 “不把 ……当回事, 拿……开玩笑”。 A