Unit 20 A卷
一、单项填空
1．(2012安庆月考)When you light candles，they may ______ some smell.
A．give away B．give off
C．give in
D．give up
2．(2012六安月考)It's generally agreed that he will ______ his position to his son.
A．take over
B．hand over
C．hand out
D．give out
3．A driver shall be fined if he drives without the ______.
A．permission
B．permit
C．allowance
D．admittance
4．(2012哈尔滨模拟)—Is there any particular soup you would like to have?
—______ you select is all right with me.
A．Whatever
B．Which
C．No matter what
D．Whichever
5．(2012南京金陵中学高三期中)Make sure the gas is turned off after a bath，which would ______ cause danger.
A．somehow
B．meanwhile
C．otherwise
D．furthermore
6．China is making great efforts in the prevention and ______ of AIDS，mankind's common“super killer”．
A．heal
B．cure
C．treat
D．recover
7．As a teacher，we should try to ______ it ______ to our students how helpful a correct learning method is.
A．get；about
B．get；away
C．get；across
D．get；off
8．After the fire，they arranged for Mr.Smith，one of our inspectors，to come and ______ the damage.
A．rescue
B．donate
C．inspire
D．assess
9．There are many books！It's not easy for us to decide ______ and what to leave behind.
A．what to be taken
B．what to take
C．how to take
D．how to be taken
10．After a whole afternoon's heated discussion，they finally ______ to us what had been decided.
A．told
B．declared
C．stated
D．made
11．He asked us to ______ them in carrying through the plan at the meeting yesterday.
A．provide
B．encourage
C．assist
D．persuade
12．He is a man of ______ ideas and he often makes a careful plan ______.
A．advanced；before advance
B．advanced；in advance of
C．advanced；in advance
D．advancing；in advance of
13．It is reported that the government will give all private ______ to floodstricken areas.
A．relations
B．intonations
C donations
D．dominations
14．I used to ______ my friends by letters while now the Internet is more convenient.
A．meet with
B．come up with
C．put up with
D．correspond with
15．Of the two ______ pieces of news the ______ is more of interest than the former.
A．latest；latter
B．last；latest
C．latest；later
D．latter；last
二、完形填空
Whenever I think of the moonwalk，a certain pop icon comes into my mind—Michael Jackson.
When I was a __1__，my mother often purchased collections of his music video on __2__.When she took the collections home，she’d __3__ me to watch them with her.__4__ I was frightened by Michael Jackson’s wolflike appearance in Thriller，I was __5__ by his voice and fluent movements.Gradually，I began to __6__ my own collections of his songs，until I __7__ all of his albums and videos.
Thus，when the news of his death __8__ in June，I felt like an important aspect(方面)of my childhood had __9__ as well.
I have loved Jackson’s music and his __10__ from the moment my mother __11__ me to him.I felt sorry for the man，who，although __12__ a brilliant and energetic performer，transformed into a pitiful person __13__ always needed a shield from the sun.
So，when his __14__ came and those rumors that damaged Jackson’s image were __15__ aside to honor the late“King of Pop”，I was rather __16__ .It struck me as ridiculous that all these people who once thought Jackson was a childmolester(骚扰者)with strange habits now __17__ him a wonderful man and the greatest __18__ who ever lived.Despite these frustrations，I __19__ mourned(悼念)his death，and my music playlist showed __20__ but his songs.
1．A.man
B．child
C．woman
D．person
2．A.end
B．account
C．performance
D．sale
3．A.appeal
B．force
C．manage
D．ask
4．A.Although
B．Because
C．Since
D．When
5．A.delighted
B．worried
C．fascinated
D．satisfied
6．A.find
B．destroy
C．build
D．manage
7．A.owned
B．gained
C．needed
D．selected
8．A.stuck
B．struck
C．dropped
D．repeated
9．A.died
B．existed
C．appeared
D．compared
10．A.manner
B．exchange
C．comment
D．steps
11．A.introduced
B．taught
C．combined
D．forgave
12．A.besides
B．still
C．once
D．yet
13．A.who
B．which
C．where
D．why
14．A.situation
B．news
C．message
D．death
15．A.thrown
B．set
C．hunted
D．thought
16．A.happy
B．angry
C．cool
D．equal
17．A.consider
B．argue
C．protect
D．advance
18．A.host
B．agent
C．musician
D．writer
19．A.silently
B．quietly
C．calmly
D．deeply
20．A.something
B．anything
C．everything
D．nothing
三、阅读理解
Rising levels of carbon dioxide in the atmosphere are a major cause of climate change，and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harming sea life.
Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades.
“We've been going to the same spot in the Pacific Ocean，and we try and characterize longterm change in the open ocean environment.And one of the key things that we measure is CO2 levels.And we've been able to record this increasing quantity of atmospheric CO2 into the ocean.”
Scientists expected that as atmospheric CO2 increased，more and more of the carbon dioxide would be absorbed into the ocean，affecting the chemical balance of the sea water，with a potentially harmful impact on shellfish and coral in particular.
“As carbon dioxide dissolves(溶解)in the water or seawater in this case，it forms a weak acid，carbonic acid，”Dore explains.“And therefore，as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater，it drives the pH down，and makes it more acidic.”
The seawater Dore and his colleagues have analyzed confirms what the theory predicts.
The effect was particularly striking at about 250 meters down，and again at 500 meters.Dore and his colleagues came up with two possible explanations.It could be that surface water picked up CO2 and then moved to those depths.Or there could be a biological explanation.
“It's important to realize that the oceans are really becoming acidic.And it could have negative impacts on a whole variety of sea life from fish to coral.It's potentially catastrophic.”
1．What can be the best title of the passage?
A．Sea Life Facing Danger
B．Scientist Researching Seawater
C．Oceans Becoming More Acidic
D．Climate Change Affecting Seawater
2．Which of the following shows the process of the impact of atmospheric CO2 on sea life?
a．Sea life is endangered.
b．CO2 goes into the surface water.
c．The ocean chemistry is affected.
d．CO2 decreases the pH and makes the seawater more acidic.
e．CO2 levels in the atmosphere go up.
A.―→―→―→―→
B.―→―→―→―→
C.―→―→―→―→
D.―→―→―→―→
3．Scientist Robert Dore came to the conclusion based on ______.
A．his research and analysis
B．the expectation of other scientists
C．some former theory
D．a major cause of climate change
4．What does the passage want to tell us most?
A．It takes time to make a scientific study.
B．Atmospheric CO2 is doing harm to sea life.
C．Robert Dore is a committed and serious scientist.
D．Measures should be taken to prevent the potential catastrophe.
课时作业(三十九)
Unit 20 A卷
一、单项填空
1．解析：句意：当你点蜡烛时，它们会发出某种气味。give off放出，排放(气味等)。
答案：B
2．解析：句意：……他将移交他的位子给儿子。hand over移交。
答案：B
3．解析：句意：如果司机无证驾驶，他将会受到罚款。permit“许可证，许可”。permission“许可，允许”；allowance“津贴，补助费”；admittance“进入权”。
答案：B
4．解析：答语句意：无论你选什么，我都没有意见。此处为主语从句，故排除C项。which表示“哪一个”，要有选择的范围，故排除。
答案：A
5．解析：句意：洗澡后确保将煤气关上，不然会引起危险。otherwise“否则，不然的话”符合题意。
答案：C
7．解析：get about四处走动，(消息等)传开；get away(from)逃离；get across使……被理解；get off下车。句意：作为老师，我们理应让学生理解正确的学习方法是多么的有益。
答案：C
8．解析：rescue救援；donate捐赠；inspire鼓励；assess评估，评定。句意：火灾之后，他们就安排我们的检查员之一史密斯先生来评估损失。
答案：D
9．解析：句意：书太多了！拿走哪些，留下哪些对我们来说不容易决定。and前后为并列结构。
答案：B
10．解析：句意：经过一下午的激烈的讨论，他们最终向我们宣布了他们的决定。tell告诉，后直接接人作宾语；declare宣布，宣告，应用declare to sb.sth.；state陈述；make做。
答案：B
11．解析：考查词义辨析。在用法上只有assist与介词in搭配，assist sb.in (doing) sth.帮助某人做某事。
答案：C
12．解析：句意：他是一个具有先进思想的人，他经常提前做好详细的计划。advanced形容词，作定语修饰名词ideas；in advance“提前”，固定短语。in advance of是介词短语，其后要有宾语。
答案：C
13．解析：donation“捐赠(物)”；relation“关系”；intonation“语调”；domination“支配，控制”。句意：据报道政府将把所有私人捐赠交给遭受洪灾的地区。
答案：C
14．解析：句意：我过去和朋友们靠书信交流，而现在用互联网更方便了。correspond with“与……通信”；meet with“碰见”；come up with“提出”；put up with“容忍”。
答案：D
15．解析：句意：这两则最新的资讯中，后者比前者更有趣。the latest最新的；the latter两者中的后者。
答案：A
二、完形填空
解题导语：在母亲的“胁迫”下，作者逐渐迷恋上了迈克尔·杰克逊的歌声和动作。当他逝世这一噩耗传开后，作者感到无比失落。虽然人们对他的非议早已烟消云散，可是作者依然播放着他的歌曲，在音乐声中缅怀心中的偶像。
1．解析：此处是对过去的回忆，叙述的是作者“孩童”时代的事情。另外，第三段中的“my childhood”也是提示。
答案：B
2．解析：本句提到作者的母亲经常购买迈克尔·杰克逊的音乐专辑，由此可知用sale。on sale 表示“出售，折价销售”。
答案：D
3．解析：下文提到作者对迈克尔·杰克逊在Thriller中像狼一样的外貌感到无比恐惧，由此可知作者当时不敢观看，所以是作者的母亲“强迫”作者和她一起欣赏。
答案：B
4．解析：前半句叙述的是对他的外貌的恐惧，后半句描写的是对他的声音以及动作的入迷，所以选A项，表示的是让步关系。
答案：A
5．解析：虽然他的外貌恐怖，但是他的声音优美，动作娴熟，深深地“迷住”了作者。fascinated 表示“入迷的，感兴趣的”。
答案：C
6．解析：上文提到作者迷恋他的声音和动作，所以自己开始慢慢收集他的专辑。build表示“创建，建立”。
答案：C
7．解析：作者坚持不懈地收集，直到“拥有”了迈克尔·杰克逊全部的唱片和录像带。B项表示“获得”时通常指获得物质利益，因此语义不太恰当。
答案：A
8．解析：此处 struck 原形是 strike，表示“突然爆发”。A 项的动词原形是 stick，表示“刺入，粘贴”，不符合语境。
答案：B
9．解析：听到迈克尔·杰克逊在6月份突然去世的消息，作者感觉自己童年时代的一个重要的组成部分也随之“消亡”。
答案：A
10．解析：上文中提到作者痴迷于他的优美的声音和娴熟的动作，由此可知作者一直非常喜欢他的音乐和舞步。
答案：D
11．解析：根据上文叙述的作者小时候的经历可知，作者是在母亲的“介绍”下开始喜欢上他的。
答案：A
12．解析：结合上下文可知他“曾经”是一个才华横溢精力充沛的表演者，后来成为一个总是戴着防护物以遮蔽阳光的可怜人物。
答案：C
13．解析：who always needed a shield from the sun是定语从句，修饰先行词person。
答案：A
14．解析：根据接下来的叙述可知此处叙述的是迈克尔·杰克逊死后人们的一些反应。
答案：D
15．解析：迈克尔·杰克逊逝世后，有关他的谣言都被抛在一边，以纪念已故的“流行音乐之王”。throw aside“把……扔在一边”。set aside表示“把……放在一边(以备后用)”，语义不恰当。
答案：A
16．解析：由下文那些曾经认为他是恋童狂、怪人的人们如今认为他是一个完美的人，是世上最伟大的音乐家，是多么荒谬，可知作者对此感到十分“气愤”。
答案：B
17．解析：此处是“consider＋宾语＋宾补”的用法。
答案：A
19．解析：既然是在悼念一个人的死亡，应该是“无声地”进行。尽管有些人前后不一的行为很让人沮丧，“我”还是默默地哀悼杰克逊。此处用silently也与上文众人的前后不一的喧嚣形成对比。后三项分别表示“安静地”“镇静地”“深深地”，语义都不太合适。
答案：A
20．解析：上文提到作者在悼念他的死亡，所以应该是播放他的歌曲。nothing but表示“除了……之外什么都没有”，即作者只播放他的歌曲。
答案：D
三、阅读理解
解题导语：本文是一篇说明文，讲的是在大气中日益增长的二氧化碳是导致气候变化的主要因素之一，对海洋生物有着潜在的危害。
1．解析：主旨大意题。本文主要讲的是二氧化碳对海洋生物的危害。
答案：A
2．解析：图表排序题。a.海洋生物受到威胁，应排在最后，故从B、D两项进行排除。再从文章的第五段“And therefore，as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater，it drives the pH down，and makes it more acidic.”可知正确答案。
答案：B
3．解析：细节推断题。从文章的第二段“Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades.”可以推知他是根据自己的研究和分析得出的结论。
答案：A