高中英語《Unit 2 Heroes》Section Ⅱ SectionⅢ課下作業(yè) 北師大版必修1

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1、 SectionⅡ& SectionⅢ Ⅰ.完形填空 For years scientists have been worried about the effects of air pollution on the earths natural conditions.Some believe the __1__inside many houses may be more dangerous than the air outside.It may be one hundred times__2__. Indoor air pollution can __3__ a person

2、to feel tired，to suffer eye pain，headache and other __4__.Some pollutants can cause breathing disorders，diseases of blood and __5__ cancer.Most scientists agree that every modern house has some kind of __6__ pollution. People pay more __7__to the problem now.It is that when builders began making __

3、8__and offices they did not want to waste energy.To do this they built buildings that limited the flow of air between inside and outside.They also began __9__ manmade building materials.These __10__ are now known to let out harmful gases.__11__the problem became more serious，scientists began searchi

4、ng for a __12__to deal with it.They discovered a natural pollution control system __13__building green plants.Scientists dont really know __14__control air pollution.They believe that a plants leaves absorb or __15__ pollutants.In __16__the plant let out oxygen through its leaves and tiny organizati

5、on on its roots.Scientists __17__ that all buildings should have one large plant or several small plants inside every nine square meters of space.__18__of different plants show that each absorbs different chemicals.So the most effective way to __19__ the air is to use different kinds of plants.Havin

6、g green plants inside your house can make it a prettier and more __20__ place. 1． A.air　　　　　　　　　 B．light C．health D．a(chǎn)tmosphere 2． A.lighter B．worse C．thicker D．heavier 3． A.permit B．desire C．cause D．persuade 4． A.pollution B．gases C．difficulties D．pr

7、oblems 5． A.at least B．hardly C．only D．even 6． A.actual B．loose C．indoor D．downtown 7． A.fear B．a(chǎn)ttention C．remark D．store 8． A.houses B．preparations C．furniture D．efforts 9． A.using B．resisting C．valuing D．judging 10．A.material

8、s B．tables C．industries D．drinks 11． A.If B．Although C．As D．Unless 12．A.chance B．instruction C．scientist D．way 13．A.from B．for C．with D．like 14．A.water B．plants C．products D．measures 15．A.take in B．put off C．let out

9、 D．give out 16．A.time B．exchange C．order D．particular 17．A.suggest B．require C．beg D．order 18．A.Colors B．Studies C．Roots D．Containers 19．A.share B．reduce C．clean D．increase 20．A.boring B．a(chǎn)dvanced C．crowded D．healthy Ⅱ.閱讀理解 A

10、 Can dogs see colors? Mans best friend is colorblind, but, fortunately, his survival does not depend upon the ability to see colors.His keen sense of smell compensates_for his inability to see colors, and enables him to differentiate between things. Extensive scientific testing on dogs supports t

11、he conclusion that they live in a colorless world. The testing done primarily focused on the dogs responses to colors for food. Dogs could not tell the difference between one color, a signal for food, and other colors that were not for food. Similar tests that was conducted on cats produced simila

12、r results, which led scientists to conclude that they, too, are colorblind and live in a gray world. The inability of most animals to see colors, from an evolutionary (進(jìn)化的) standpoint, is quite simple to understand. Many colorblind animals have dullcolored coats, hunt for food in the dark of night,

13、 or graze in the dim twilight (黃昏的) hours. Their other senses have developed to the point where the lack of color vision in no way weakens them. For them, life in a colorless world is neither a handicap, nor a threat to their survival. The only animals, other than man, which scientists can conclusi

14、vely say have color vision are monkeys and apes. Both can be trained to open a colored door, behind which is food, and man can be trained to open a refrigerator door of any color! 1．According to________，scientists found that dogs and cats are colorblind. A．what food they intend to eat B．their ke

15、en sense of smell C．a(chǎn)n evolutionary standpoint D．their responses to colors for food 2．The underlined phrase “compensate for” probably means________. A．be different from B．make up for C．rely on D．give in to 3．Except for________all the following animals can tell apart different colors.

16、 A．lions B．humans C．monkeys D．a(chǎn)pes 4．Which of the following is NOT true about dogs? A．They have dullcolored coats. B．They hunt for food in the dark of night. C．They can survive without any threat. D．Their other senses, especially their sense of smell，are very sensitive. B The sta

17、te of Florida is best known for its beaches and palm trees.But a large part of it is swamp(沼澤地)．The famous Everglades，a slowmoving sheet of water full of plants and alligators(鱷魚)，covers much of the southern part of the state.To the north，the Okefenokee，which is partly in Florida and mostly in nei

18、ghboring Georgia，is a true swamp with its own alligators and snakes. It was formed when waters from an ancient ocean drew back and a large sandbar(沙洲)blocked most of the water flow to the sea. There is no big city within 200 kilometers，but tourists from all over the world manage to find it.They a

19、ll want to know about its unusual name.Okefenokee is a Miccosukee Indian word meaning land of trembling(顫抖的)earth.Way back in the swamp are small，floating(漂浮的) islands，which one can walk across.And they tremble.Standing on them is like trying to balance on a floating mattress(床墊)． The Okefenokee，wh

20、ich is already nearly filled with plants，would probably dry up and become just another forest if it were not for the fires that come along from time to time.So the water in this protected National Wildlife Refuge keeps moving —slowly，very slowly. 5．According to the passage，the famous Everglades lie

21、s ________. A．mainly in Georgia B．in the north of Florida C．to the south of the Okefenokee D．near the National Wildlife Refuge 6．The underlined word “It” in Paragraph 2 refers to “________”． A．Florida B．the Okefenokee C．Georgia D．a(chǎn)n ocean 7．The third paragraph mainly tells us _____

22、___. A．where the Okefenokee lies B．what the size of the Okefenokee is C．how the floating islands come into being D．how the Okefenokee gets its special name 8．What can be inferred from the passage? A．The Okefenokees alligators attract many tourists. B．Hammocks tremble but do not move. C．Fir

23、es prevent the Okefenokee from drying up. D．Florida and Georgia cover 1,800 square kilometers in total. 詳解答案 Ⅰ. 語篇解讀：空氣污染對生態(tài)環(huán)境的破壞非常嚴(yán)重。針對這種情況，科學(xué)家找到了一些解決該問題的方法。 1．選A　由下文的the air outside可知答案。 2．選B　上句話說室內(nèi)空氣比室外空氣壞，本句說的是室內(nèi)空氣比室外空氣差的倍數(shù)。 3．選C　句意為：室內(nèi)空氣污染能使人感到疲憊、眼睛疼痛、頭痛以及其他問題。 4．選D　疲勞、眼睛疼痛、頭痛都是室內(nèi)污染帶來

24、的問題，所以本空選擇problems。 5．選D　“導(dǎo)致癌癥”與“導(dǎo)致呼吸紊亂、血液病”在程度上有遞進(jìn)的關(guān)系，故用even。 6．選C　第二段講的是室內(nèi)污染所帶來的一些問題，以及所導(dǎo)致的一些疾病，因此此處指多數(shù)科學(xué)家斷言每一個現(xiàn)代居室都存在著室內(nèi)污染。 7．選B　本句話表示“人們開始關(guān)注這個問題”。pay attention to“注意，重視”，固定搭配。 8．選A　由下一句“To do this they built buildings that limited the flow of air between inside and outside”可知，所填詞與建筑有關(guān)，所以用hou

25、ses。 9．選A　上文提到，他們在建造房屋與辦公室時不想浪費能源，所以此處指他們也開始使用人造材料，所以填using。 10．選A　由空前的manmade building materials可知，這里表示這些材料釋放有害氣體。 11．選C　下半句scientists began searching for a __12__ to deal with it是上半句的結(jié)果，上半句意為：因為這個問題越來越嚴(yán)重。 12．選D　解決污染問題，只能是尋找一種方法， 故用way。 13．選B　本句話意思是：他們發(fā)現(xiàn)了一種適用于建筑的天然材料。for在此表示“適用于”。 14．選B　由下一句“

26、They believe that a plants leaves absorb or __15__ pollutants”可知，此處選plants。 15．選A　由空前的or可知，該空應(yīng)與absorb是同義詞，故用take in。 16．選B　在交換中，植物通過葉子或根的小組織來釋放出氧氣，所以應(yīng)為exchange“交換”，“交換”指的是植物吸收污染物，然后釋放氧氣。 17．選A　鑒于把植物放在房間里的好處，所以科學(xué)家提出了一種“建議”。 18．選B　each absorbs different chemicals是科學(xué)家得出的結(jié)論，所以被認(rèn)為是“研究”得到的。 19．選C　綠色植

27、物對控制室內(nèi)污染有很好的作用，故推斷此題填clean。clean the air 意為“凈化空氣”。 20．選D　由于綠色植物能夠凈化室內(nèi)空氣，所以在房間里放置綠色植物能夠使房子漂亮并有益于健康。 Ⅱ.1.選D　事實細(xì)節(jié)題。第三段的第一、二句：科學(xué)家通過標(biāo)示食物的顏色來觀察狗和貓的反應(yīng)，最后得出結(jié)論：狗和貓都是色盲。 2．選B　詞義猜測題。前一句說狗不能分辨顏色，這一句接著說：它們敏感的嗅覺對其色盲作了“彌補”。 3．選A　事實細(xì)節(jié)題。根據(jù)最后一段第一句話可得出答案。 4．選C　事實細(xì)節(jié)題。第四段中A和B的說法都提到了；由本段第三句可推斷出D的說法也正確；文中未提C的說法。 語篇解

28、讀：著名的奧克弗諾基沼澤一部分位于佛羅里達(dá)，但大部分位于格魯吉亞。雖然200公里內(nèi)沒有大城市，但來自世界各地的游客還是設(shè)法來到這里…… 5．選C　由第一段最后一句可知，the Okefenokee位于the famous Everglades的北面。因此the famous Everglades 位于the Okefenokee的南面。 6．選B　it指代的是the Okefenokee沼澤地。 7．選D　第三段主要講述了the Okefenokee這個特殊的名字是怎樣得來的。 8．選C　由最后一段第一句可推知，如果不是因為不時會發(fā)生火災(zāi)，這片沼澤地就會干涸了。 - 6 -