高中英语《Unit 2 Heroes》Section Ⅱ SectionⅢ课下作业 北师大版必修1

1 Section Section Section Section 完形填空 For years scientists have been worried about the effects of air pollution on the earth s 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 man made 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 don t really know 14 control air pollution They believe that a plant s 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 1 A air B light C health D atmosphere 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 problems 5 A at least B hardly 2 C only D even 6 A actual B loose C indoor D downtown 7 A fear B attention C remark D store 8 A houses B preparations C furniture D efforts 9 A using B resisting C valuing D judging 10 A materials 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 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 advanced C crowded D healthy 阅读理解 A A Can dogs see colors 3 Man s 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 进化的 standpoint is quite simple to understand Many colorblind animals have dull colored coats hunt for food in the dark of night or graze in the dim twilight 黄昏的 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 1 According to scientists found that dogs and cats are colorblind A what food they intend to eat B their keen sense of smell C an 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 A lions B humans C monkeys D apes 4 Which of the following is NOT true about dogs A They have dull colored coats 4 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 B The state of Florida is best known for its beaches and palm trees But a large part of it is swamp 沼泽地 The famous Everglades a slow moving sheet of water full of plants and alligators 鳄鱼 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 颤抖的 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 床垫 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 5 According to the passage the famous Everglades lies 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 an ocean 7 The third paragraph mainly tells us 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 5 8 What can be inferred from the passage A The Okefenokee s alligators attract many tourists B Hammocks tremble but do not move C Fires prevent the Okefenokee from drying up D Florida and Georgia cover 1 800 square kilometers in total 详解答案 语篇解读 空气污染对生态环境的破坏非常严重 针对这种情况 科学家找到了一些解决该 问题的方法 1 选 A 由下文的 the air outside 可知答案 2 选 B 上句话说室内空气比室外空气坏 本句说的是室内空气比室外空气差的倍数 3 选 C 句意为 室内空气污染能使人感到疲惫 眼睛疼痛 头痛以及其他问题 4 选 D 疲劳 眼睛疼痛 头痛都是室内污染带来的问题 所以本空选择 problems 5 选 D 导致癌症 与 导致呼吸紊乱 血液病 在程度上有递进的关系 故用 even 6 选 C 第二段讲的是室内污染所带来的一些问题 以及所导致的一些疾病 因此此处 指多数科学家断言每一个现代居室都存在着室内污染 7 选 B 本句话表示 人们开始关注这个问题 pay attention to 注意 重视 固 定搭配 8 选 A 由下一句 To do this they built buildings that limited the flow of air between inside and outside 可知 所填词与建筑有关 所以用 houses 9 选 A 上文提到 他们在建造房屋与办公室时不想浪费能源 所以此处指他们也开始 使用人造材料 所以填 using 10 选 A 由空前的 man made building materials 可知 这里表示这些材料释放有害 气体 11 选 C 下半句 scientists began searching for a 12 to deal with it 是上 半句的结果 上半句意为 因为这个问题越来越严重 12 选 D 解决污染问题 只能是寻找一种方法 故用 way 13 选 B 本句话意思是 他们发现了一种适用于建筑的天然材料 for 在此表示 适 用于 14 选 B 由下一句 They believe that a plant s leaves absorb or 15 pollutants 可知 此处选 plants 15 选 A 由空前的 or 可知 该空应与 absorb 是同义词 故用 take