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

Section& Section.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 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 _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 searching 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 organization 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.Having green plants inside your house can make it a prettier and more _20_ place.1A.airBlightChealth Datmosphere2A.lighter BworseCthicker Dheavier3A.permit BdesireCcause Dpersuade4A.pollution BgasesCdifficulties Dproblems5A.at least BhardlyConly Deven6A.actual BlooseCindoor Ddowntown7A.fear BattentionCremark Dstore8A.houses BpreparationsCfurniture Defforts9A.using BresistingCvaluing Djudging10A.materials BtablesCindustries Ddrinks11A.If BAlthoughCAs DUnless12A.chance BinstructionCscientist Dway13A.from BforCwith Dlike14A.water BplantsCproducts Dmeasures15A.take in Bput offClet out Dgive out 16A.time BexchangeCorder Dparticular17A.suggest BrequireCbeg Dorder18A.Colors BStudiesCRoots DContainers19A.share BreduceCclean Dincrease20A.boring BadvancedCcrowded Dhealthy.閱讀理解ACan 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 the 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 similar 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, 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 conclusively 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! 1According to_，scientists found that dogs and cats are colorblind.Awhat food they intend to eatBtheir keen sense of smellCan evolutionary standpointDtheir responses to colors for food2The underlined phrase “compensate for” probably means_.Abe different from Bmake up forCrely on Dgive in to3Except for_all the following animals can tell apart different colors.Alions BhumansCmonkeys Dapes4Which of the following is NOT true about dogs?AThey have dullcolored coats.BThey hunt for food in the dark of night.CThey can survive without any threat.DTheir other senses, especially their sense of smell，are very sensitive.BThe state 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 neighboring 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 all 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，which 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.5According to the passage，the famous Everglades lies _.Amainly in GeorgiaBin the north of FloridaCto the south of the OkefenokeeDnear the National Wildlife Refuge6The underlined word “It” in Paragraph 2 refers to “_”AFlorida Bthe OkefenokeeCGeorgia Dan ocean7The third paragraph mainly tells us _.Awhere the Okefenokee liesBwhat the size of the Okefenokee is Chow the floating islands come into beingDhow the Okefenokee gets its special name8What can be inferred from the passage?AThe Okefenokees alligators attract many tourists.BHammocks tremble but do not move.CFires prevent the Okefenokee from drying up.DFlorida and Georgia cover 1,800 square kilometers in total.詳解答案.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(gè)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(gè)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houses。9選A上文提到，他們在建造房屋與辦公室時(shí)不想浪費(fèi)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?yàn)檫@個(gè)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“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Beach 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。.1.選D事實(shí)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(bǔ)”。3選A事實(shí)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(shí)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Bit指代的是the Okefenokee沼澤地。7選D第三段主要講述了the Okefenokee這個(gè)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?yàn)椴粫r(shí)會(huì)發(fā)生火災(zāi)，這片沼澤地就會(huì)干涸了。- 6 -