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人教版英語必修三強化練習:unit 4 第2課時含答案精修版

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1、人教版英語精品資料(精修版) Unit 4  第二課時 Ⅰ.單項填空 1.________ the universe began with the “big bang” has been widely accepted. A.Whether B.Why C.That D.What 答案:C 句意:宇宙開始于“大爆炸”已被廣泛接受。從句中意義完整,只需要引導詞,故選C。 2.It has been proved ________ having a balanced diet helps to keep healthy. A.if B.because C.when D.t

2、hat 答案:D 句意:據證明擁有一個均衡的飲食有助于保持健康。it為形式主語,后面從句為真正的主語,且從句意義完整,故選D。 3.________ we'll go camping tomorrow depends on the weather. A.If B.Whether C.That D.Where 答案:B 由depends on the weather可知,此處應為“是否”之意,應用if或whether,而主語從句置于句首時只能用whether。故選B。 4.(2014·萊陽高一檢測)________ is a fact that English is being ac

3、cepted as an international language. A.There B.This C.That D.It 答案:D 句意:英語正被接受成為國際性語言是一個事實。此處用it作形式主語,that從句為真正的主語。 5.________ made the parents proud was ________ their son had been admitted to a key university. A.What; because B.What; that C.That; what D.That; because 答案:B 第一個空用what引導主語從句,wh

4、at在該從句中充當主語;was后為表語從句,該從句中不缺少任何成分,故用that引導,且不可省略。故選B。 6.It worried him a bit ________ his memory was becoming worse. A.while B.that C.if D.what 答案:B it為形式主語,真正的主語從句中不缺少任何成分,故用that引導主語從句,且不可省略。 7.(2014·九江高一檢測)________ their flight will arrive on time is ________ they are concerned about. A.Whet

5、her; what B.Whether; that C.When; what D.How; that 答案:A 根據語境,主語從句應用whether引導,表示未定的事;what引導表語從句,在從句中作are concerned about的賓語。 8.________ makes the book so extraordinary is the creative imagination of the writer. A.That B.What C.Who D.Which 答案:B 主語從句缺少主語要用what引導。 9.When and why he came here ____

6、____ yet. A.is not known B.are not known C.has not known D.have not been known 答案:A 句意:他什么時候以及為什么來這兒還不知道。when and why引導的從句作主語,謂語動詞用單數,且不被知道,故選A。 10.He left home several days ago. ________ worries many people and is to be found out. A.Where he has gone B.Where did he go C.Which place has he go

7、ne D.Where has he gone 答案:A 考查從句的語序。這是一個主語從句,需使用陳述句語序。故選A。 11.(2014·煙臺高一檢測) Steve Jobs has gone but ______ he has left behind is truly extraordinary. A.that B.why C.what D.how 答案:C 分析句子結構可知,“________he has left behind”是主語從句,且關系代詞在從句中作賓語,故選what。 12.(2014·天津,14)I think ________ impress me about

8、 his painting is the colours he uses. A.what B.that C.which D.who 答案:A 考查名詞性從句。句意:我認為關于他的繪畫讓我印象深刻的是他使用的顏色。impresses缺少主語,故用what引導名詞性從句;that引導名詞性從句,不作成分。 13.(2014·泰安高一檢測)__________ is known to all is ________ we won 38 gold medals in 2012 London Olympic Games. A.It; that B.As; what C.What; that

9、D.That; what 答案:C 句意:眾所周知,2012年倫敦奧運會上我們贏得了38枚金牌。________is known to all是主語從句,從句中缺少主語,意為“所……的”,應由what引導;第二個is后的部分是表語從句,且從句表陳述意義,應由that引導,且不可省略。故選C。 14.________ seems to be no possibility ________ Li Hua can win the first prize in the 100-meter race. A.It; that B.There; that C.There; whether D.It;

10、 whether 答案:B There seems to be是固定表達;第二個空填that,引導同位語從句補充說明possibility的具體內容。故選B。 15.Why and how he came here ________ yet. A.is not known B.are not known C.has not known D.have not been known 答案:A 句意:他為什么及如何來這兒還不知道。Why and how引導的從句主語,謂語動詞用單數,且不被知道,故選A。 Ⅱ.完形填空 The biggest safety threat facing a

11、irlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the past 15 years,__1__have reported well over 100__2__that could have been caused by electromagnetic interference(干擾). The__3__of this interference remains unconfirmed,__4__increasingly, ex

12、perts are pointing the blame at portable electronic devices such as portable computers, radios and cassette players and mobile telephones. RTCA, an organization which__5__the aviation industry, has recommended that__6__airlines ban such electronic devices from being used__7__“critical”stages of fli

13、ght,__8__take-off and landing. Some experts have gone further,__9__for a total ban during all flights. Currently, rules on using these devices are__10__up to individual airlines. And although some airlines prohibit(禁止)passengers from__11__such equipment during take-off and landing, most are reluctan

14、t to enforce a total ban. Many passengers want to work during flights. The__12__is predicting how electromagnetic fields__13__affect an aircraft's computers. Experts__14__that portable devices emit radiation, which affects those wavelengths which__15__use for navigation and communication. But, they

15、 have not been able to__16__these effects in a laboratory; they have no__17__of knowing whether the interference might be__18__or not. The fact that aircraft may be vulnerable(易受攻擊)to interference__19__the risk that terrorist may use radio system in order to__20__navigation equipment. 1.A.drivers

16、B.pilots C.engineers D.conductors 答案:B 文章第一句已表明:當今航空公司面對的最大的安全威脅不是持槍的恐怖分子,而是手提電腦。所以對飛機上的這種事情最了解的應是飛行員,而不是A、C、D的那些人。 2.A.actions B.events C.matters D.incidents 答案:D 此處指飛機上發(fā)生的這類事情。本題同樣考查了詞義辨析。incident指“較小的事件,插曲,小故事”,action是“(采取的)行動”之意,event是“大事件”,matter指“問題,事情,或麻煩事”等,均不合適。 3.A.reason B.effect C

17、.source D.story 答案:C 根據下句話得知“手提電腦,移動電話”等這些電子裝置應是“干擾源”,而不是受干擾的結果,受干擾的應當是飛機。reason不合適是因為reason接for而不接of,表示“……的原因”。 4.A.and B.for C.but D.so 答案:C “沒有確認”(unconfirmed)與“在增加”(increasing)中間應是轉折關系,不是遞進、因果關系,所以不選A、B、D。 5.A.advises B.persuades C.ensures D.warns 答案:A 因為下文用了recommend(勸告)一詞,所以這個組織應該是向航空工業(yè)

18、提建議的一個組織,這樣才前后一致。 6.A.some B.several C.all D.no 答案:C 因為這種電磁的(electromagnetic)干擾對飛機航空的安全造成最大的威脅,所以應該是所有的飛機都要有這樣的禁令。 7.A.for B.with C.by D.during 答案:D 此處指飛機在飛行期間的一些對技術設備要求嚴格、要求高的時期,一定要嚴禁使用此類裝置,例如:起飛、降落等。critical原意為“挑剔的,緊要危急的”,在此略有轉義;stage原意“舞臺”,此處意指“階段,時期”,所以用during。 8.A.particularly B.speciall

19、y C.unfortunately D.possibly 答案:A 據上面解釋,特別是起飛時。 9.A.looking B.calling C.waiting D.asking 答案:B 有些專家要求更高,要求在飛行期間要禁用:call for意為“需要,要求”;ask for意為“要,索取”。 10.A.put B.left C.given D.sent 答案:B 表示目前使用這些設置的規(guī)矩都留了下來,由那些individual airlines自己決定,因為下文有表達:許多乘客還是想在飛機上辦公。 11.A.carrying B.taking C.fixing D.us

20、ing 答案:D 這種裝置可以攜帶,不能使用,一旦使用會產生電磁效應干擾,所以選D。禁止使用,而不是禁止攜帶,fix是“安裝”,一般沒有人專門上飛機安裝。 12.A.possibility B.difficulty C.necessity D.idea 答案:B 推斷出電磁效應是如何影響飛機的計算機,這在目前是件難事,如果不難,科學家能解決,就不必有禁令了,所以選difficulty。 13.A.must B.should C.need D.might 答案:D 表示“可能”。因為拿不準,所以用might表示可能,語氣輕。 14.A.know B.tell C.guess D

21、.think 答案:A 這些手提裝置已廣為人們所用,所以科學家是“知道”,而不是“猜”或“認為”,tell后缺少sb。 15.A.aircrafts B.trains C.ships D.cars 答案:A 該文講的都是航空,選A(飛機,飛行器)。 16.A.restudy B.retell C.reproduce D.renew 答案:C 該句主語為they,指的是那些有電磁效應的裝置,因此不選A、B。選項C表義為“再現(xiàn)”;而renew意為“更新,重新開始”。 17.A.key B.way C.step D.trick 答案:B 因為這些裝置在實驗室里那些干擾還未能再現(xiàn),

22、所以科學家們就沒有辦法(have no way of doing)得知這種干擾是否危險。 18.A.dangerous B.strong C.helpful D.useful 答案:A 全文講述的是電子產品的電磁干擾對飛機安全性的威脅,本空用dangerous點明主題。 19.A.faces B.raises C.runs D.takes 答案:B 飛機容易受干擾攻擊的這一事實增加了恐怖分子冒險利用無線電系統(tǒng)破壞航空設備的可能性。根據最后一句話及全文的整體意思,說明飛機對干擾是非常敏感的,因此此類裝置對犯罪分子破壞飛機裝備的可能性就增加了。 20.A.repair B.guide

23、 C.defend D.destroy 答案:D 恐怖分子只會冒險破壞,而不會去修理、引導等。 Ⅲ.閱讀理解 The earth is the only planet that scientists think has life. Why does the earth have life while the other planets don't? For one thing, the earth is just the right temperature. As the_third_planet from the sun,the earth seems to be just

24、the right distance away. The planets which are closer to the sun are so hot that their surfaces bake(烘烤)in the sun. The farthest planets are cold balls. When the earth developed—which scientists believe may have happened about 4 billion years ago—many gases covered the earth. The gases caused the e

25、arth to be hot. But something wonderful happened. The temperature was just right for thick clouds to form. It rained very hard for a very long time. This gave the earth its oceans. Water made it possible for plants to grow. The plants created oxygen in the atmosphere. Oxygen is the gas that humans a

26、nd animals breathe. Only one other planet in the solar system seems to be something like the earth. That planet is Mars (火星). Mars is smaller than the earth,and it is quite a bit cooler. But it is not too cold for humans. On some days, the temperatures are as low as a winter day in the northern Uni

27、ted States. If you wore a special spacesuit, you could walk around on Mars. You would have to bring your own air to breathe,because the air on Mars is too thin to breathe. Mars has the largest volcano(火山)in the solar system. It is sixteen miles high. The highest volcano on the earth is five miles h

28、igh. The most unexpected(未預料到的)sight on Mars is dried-up river beds. Scientists believe that Mars was once much better than it is now. Does this mean there could have been living things on Mars? Scientists are not sure, but there has been no sign so far. 文章大意:文章介紹了地球存在生命的原因以及火星的情況。 1.Which of the

29、following is NOT the reason that the earth has life? A.The earth is just the right temperature. B.The volcanos on the earth are lower than those on Mars. C.There is oxygen in the atmosphere of the earth. D.The earth seems to be just the right distance away from the sun. 答案:B 細節(jié)理解題。文中提到地球是可證實的唯一

30、有生命存在的太陽系行星,其原因包括地球溫度合適、距太陽距離適中和大氣里含有氧氣等。B項火山與此無關。 2.The underlined phrase“the third planet”in the first paragraph refers to________. A.the Sun B.the Moon C.the Earth D.the Mars 答案:C 詞義猜測題。根據第一段中內容可知距離太陽第三遠的行星指的是地球。 3.Which of the following about the Mars is NOT true? A.There could have been l

31、iving things on Mars. B.Mars has the largest volcano in the solar system. C.There is almost no oxygen in the air on Mars. D.Mars is smaller than the earth,and it is quite a bit cooler. 答案:A 細節(jié)理解題。文章最后一段提到火星上有干涸的河床的跡象,但這一點并不能證實火星上存在生命,因為還沒有生命跡象,故A項不正確。其他三項都與文章相符。 4.Which of the following is probably the best title for the passage? A.The Earth B.The Moon C.Planets in the Solar System D.Mars is Most Like the Earth 答案:D 主旨大意題。文章先說明地球上存在生命的原因又對比了火星和地球,說明火星是與地球最相似的行星。D項做標題最為恰當。

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