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必修4 Module 6
课时作业(二十四) Unexplained Mysteries of the Natural World 自然界未解之谜
Ⅰ.单项填空
1．There are still quite a number of children who cannot afford to go to school________poverty.
A．instead of B．but for
C．due to D．apart from
2．________ no point in beating around the ’s ________.
A．It’s；come straight to the point
B．There’s；come to the point
C．This is；get to the point
D．That is；reach the point
3．The businessman claimed________from Harvard，while in fact，he never went to college.
A．to have graduated B．to graduate
C．having graduated D．graduating
4．Some classmates were in favour of Miss Li’s opinion while others were________it.
A．for B．to
C．against D．through
5．The patient was________of losing his life and had to be operated on at once.
A．in danger B．in the danger
C．out of danger D．out of the danger
6．It was snowing Mary felt cold，so she stood ________ to her mother.
A．close B．closely
C．closed D．closing
7．It is hoped that these discoveries can ________ the origins of the universe.
A．come to light B．throw light on
C．come to life D．bring to light
8．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
9．It is too late to treat his ________ me about his illness earlier.
A．must tell B．should tell
C．may have told D．should have told
10．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
11．During an earthquake，the great part of damage and loss of life have been ________ collapse of buildings and other effects rather than from the quakes themselves.
A．owing to B．by reason of
C．on account of D．due to
12．Studies have shown that 45 percent of reptile species and 24 percent of butterflies in these countries are in danger of ________.
A．dying down B．dying away
C．dying back D．dying out
13．Mary actually saw lung cancer kill her father，who had smoked ________ since he was a teenager.
A．badly B．seriously
C．heavily D．fiercely
14．He tried hard to keep ________ in face of the policemen，but the sweat on his forehead gave him away.
A．silent B．still
C．calm D．quiet
15．—What’s happened to Tom？I can’t get into contact with him.
—I don’t know.He________lost.
A．must have got B．could get
C．might get D．may have got
Ⅱ.阅读理解
For many people in the United States，ArabAmericans are an invisible part of the ArabAmericans as a community have made significant contributions to American society in fields ranging from literature to politics to medicine，many Americans know very little about Americans of Arab descent.
Arab history in the United States goes back to the late 1800s when large numbers of Arab immigrants first began making their journey to a land known simply as“Amreeka”．
Historians generally describe Arab immigration to America in two first wave took place between 1860 and first wave consisted of Lebanese and Syrian，and some Egyptian new immigrants，who were predominantly Christian，came to America in pursuit of better the doomed Titanic，which set sail for America in 1912，had about a hundred Arab passengers majority of Arab Americans today are descendents of the first wave of immigrants；they are the third or more generation now in America.
The second wave of immigrants followed after the Second World War，sparked by political unrest (政治动乱) in the Middle second wave of immigrants consists of mainly Arab Muslims and continues to this day.
ArabAmericans make up 3 million of the population in the United States，according to demographers (人口统计学家)．And contrary to popular belief,64 percent of them are percent of ArabAmericans are US citizens.
ArabAmericans surpass the national average in both education and is important among ArabAmericans；82 percent have high school diplomas,36 percent have bachelor’s degrees or higher，and 15 percent have graduate average income among ArabAmericans is about 39,580 US dollars，which is higher than the US average.
1. We can know from the first paragraph that________.
A．ArabAmericans are invisible in the United States
B．ArabAmericans have made significant contributions to American society only in literature
C．there are 3 million ArabAmericans in the United States
D．many Americans don’t know much about Americans of Arab descent
2. The Arab immigration is said to begin________.
A．as early as the late 18th century
B．as early as the early 19th century
C．as early as the late 19th century
D．after the Second World War
3. Which of the following statements about the Arab immigration to America is TRUE?
A．Demographers usually think there are two waves.
B．The first wave began in 1924.
C．The second wave continues to today.
D．The second wave was sparked by the Second World War.
4. Immigrants of the first wave came to America to________.
A．escape from the political unrest
B．look for better opportunities
C．make contributions to American society
D．make a journey to America
5. What’s the main idea of the last paragraph?
A．ArabAmericans surpass the national average in both education and income.
B．Education is important among ArabAmericans.
C．36 percent of the ArabAmericans have bachelor’s degrees.
D．ArabAmericans’average income is about 39,580 US dollars.
President Barack Obama put his political worries to one side and followed the traditional American call to “Go West” as he，his wife and daughters visited the Grand Canyon.
With his wife Michelle，daughters Sasha and Malia and his White House retinue (随从)，Mr Obama struck out into the wilderness on the third day of a fourday tour through western mountain states，aiming at defending his health care reform bid.
Mr Obama’s workhard，playhard tour mixed trips to some of America’s most splendid beauty spots with the serious business of resisting Republicans’attacks on his health care held two town hall (市政厅) meetings on the issue in Montana and Colorado on Friday and Saturday.
Mr Obama，the first “city president” in decades，has spent his adult life in New York，Boston，Chicago and，now， favourite athletic activities include basketball，golf，and usually does his everyday exercise in the and hunting are not part of his typical favourite sports items.
But late on Friday，the president tried his hand at flyfishing，fulfilling an oftenstated goal from the campaign trail.
“Every time we went to Montana，he said，‘I’m going to come back here and learn how to flyfish，’” said Robert Gibbs，Mr Obama’s spokesman.
“He was curious to do that and finally got a chance...However，he was a bit depressed because he didn’t get to hold one of the fish，”Mr Gibbs admitted.
“Michelle Obama and her two daughters，meanwhile，spent Saturday on whitewater rafting in the shadow of Montana’s craggy (陡峭的) peaks in the rain，and I’m told，in the hail，” said Mr Gibbs.“Despite the bad weather，they had fun，” he added.
6．During the visit to the West，President Obama himself did the following things except________.
A．playing B．fishing
C．rafting D．working
7．What are Mr Obama’s favourite sports activities?
A．Volleyball，golf and fishing.
B．Basketball，bodysurfing and hunting.
C．Golf，basketball and bodysurfing.
D．Fishing，bodysurfing and basketball.
8．According to the passage，which of the following statements is NOT TRUE?
A．Washington is the last city in which Mr Obama spends his adult life up to now.
B．Fishing and hunting are not part of his typical favourite sports items.
C．President Obama’s visit to the West is to defend his health care reform bid.
D．There is nothing to do but learn how to flyfish with his daughters.
9．According to the passage，who aren’t satisfied with Obama’s health care reform?
A．The public. B．Republicans.
C．Businessmen. D．The poor.
10．The best title for the passage might be “________”．
A．Obama’s worries to health care plan
B．Obama’s visit to the West
C．Obama’s daughters and wife
D．Obama’s fourday tour
答案：
Ⅰ.单项填空
1．C due to由于；instead of代替；而不是；but for要不是；apart from除了。句意为“还有很多孩子因为贫穷上不起学”。
2．B There’s no point in doing ，意为“做某事没有用处”。句意为：旁敲侧击是没有用处的，让我们开门见山吧。come straight to the point＝come to/get to/reach the point 意为“开门见山，说明重点”。
3．A claim to have done sth.声称曾经做过某事。to have done是不定式的完成式，表示动作发生在谓语动词之前。句意为“那个商人声称他毕业于哈佛大学，但实际上他从没上过大学”。
4．C 由while可知前后为对比关系。in favour of赞成，故空格处应填入意思相反的词。be for赞成，与句意相矛盾；be against反对，与句意相符。
5．A 该句意为：这位病人有丧失性命的危险，必须立刻做手术。
6．A close 可以是形容词、副词，表示“近的(地)；亲密的(地)”；closely 是副词，意为“密切地；仔细地”；closed 意为“关闭着的”；closing 是 close 的ing 形式，也是形容词和名词，意为“结束的”“结束”，根据语境“站得离某人很近”应用 stand close to sb.。
7．B 句意为：希望这些发现能帮助弄清楚宇宙的起源。come to light 是不及物短语，意为“显露”；throw light on 帮助弄清楚；阐明；come to life 复活；苏醒；bring light 使……显露。根据句意，B项最佳。
8．B 句意为“他们屡次仔细检查计划的所有细节，以确保工程顺利进行”。go through是个多义词组，意为“详细调查；对……仔细查看，搜遍某个地点；通过法律”等；get through 也是多义词组，有“通过考试；做完；取得联系”等意思；get over超过；渡过；克服(困难)；dip into蘸到……里面。
9．D should have done 表示“本该做……却未做”。
10．A 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。
11．D due to由于，既可作表语又可作状语，owing to，on account of 与 due to 同义，但多作状语，一般不作表语；by reason of由于，以……为理由，也在句中作状语。
12．D 句意为：研究表明在这些国家里45%的爬行动物和24%的蝴蝶正处于灭绝的危险状态。die down(骚动、闹声等)渐渐平息；die away(风、闹声等)渐弱；die back(指植物)茎死，根不死；die out灭绝；消亡。
13．C 表示吸烟很厉害时，要用heavily。
14．C 考查形容词词义辨析。句意为：面对警察，他尽可能想保持镇静，但是额头上的汗水使他暴露无疑。silent 沉默不语的；still 一动不动的；calm (心情)平静的；镇静的；quiet 安静的。
15．D 由答语中的“我不知道”可知说话者对“汤姆发生了什么事”把握不大。“他可能迷路了”与问句时态一致，表示对过去发生事情的推测。
Ⅱ.阅读理解
1．D 细节理解题。根据“many Americans know very little about Americans of Arab descent”可知答案。
2．C 细节理解题。根据第二段的第一句“Arab history in the United States goes back to the late 1800s”可知答案，从第三段的第二句“The first wave took place between 1860 and 1924.”也可知答案。
3．C 细节理解题。根据第四段中的“This second wave of immigrants consists of mainly Arab Muslims and continues to this day.”可知答案为C。
4．B 细节理解题。根据第三段中的“These new immigrants，who were predominantly Christian，came to America in pursuit of better opportunities”可知答案为B。
5．A 主旨大意题。阅读最后一段可知，这段的主题句就是该段的第一句。
6．C 细节理解题。根据第三段中的“Mr Obama’s workhard，playhard tour mixed trips to some of America’s most splendid beauty spots...”可知A项和D项正确。根据第五段中的“the president tried his hand at flyfishing...”可知B项正确。由第八段中的“Michelle Obama and her two daughters，meanwhile，spent Saturday on whitewater rafting...”不难看出，C项是米歇尔·奥巴马和她的两个女儿所做的事情。
7．C 细节理解题。由文章第四段中的“His favourite athletic activities include basketball，golf，and bodysurfing.”可知答案为C。
8．D 细节理解题。利用“略读法”快速浏览文章可得出本题答案。由第四段中的“Mr Obama，the first‘city president’in decades，has spent his adult life in New York，Boston，Chicago and，now，Washington.”和“Fishing and hunting are not part of his typical favourite sports items.”可知A、B两项是正确的；C项可以由第二段最后一句话得知。
9．B 细节理解题。根据文章第三段中的“...with the serious business of resisting Republicans’attacks on his health care plan”可知，奥巴马在游览美国西部的同时要处理重要政务，抵制共和党人对其医疗改革计划的攻击。
10．B 标题归纳题。综合全文分析，本文的第一段是全文的核心段，起到提纲挈领的作用，其他段落都是为第一段服务的。由第一段内容可知B项最合适。
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