Can trees talk? Yes — but not in words. Scientists have reason to believe that t
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Can trees talk? Yes — but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree attacked in the woods by caterpillars(毛毛虫)changed the chemistry of its leaves and made them taste so terrible that they got tired of the leaves and stopped eating them. Then even more astonishing, the tree sent out a special vapor—a signal causing its neighbors to change the chemistry of their own leaves and make them less tasty. Communication, of course, does not need to be in words. We can talk each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar for honey. So why shouldn’t trees have ways of sending messages? 1.It can be inferred from the passage that caterpillars do not feed on leaves that . A.have an unpleasant taste B.are lying on the ground C.have an unfamiliar shape D.bees don’t like 2.According to the passage, the willow tree was able to communicate with each other by . A.waving its branches B.giving off a special vapor C.dropping its leaves D.changing the color of its trunk 3.According to the passage, bees communicate by . A.touching one another B.smiling one another C.making special movement D.making unusual sound 4.The author believes that the incident described in the passage . A.cannot be taken seriously B.seems completely reasonable C.should no longer be permitted D.must be checked more thorough |
答案
1----4 ABCB |
解析
本篇科普文章讲述了柳树通过发出一种特别水蒸汽来同临居进行交流。作者认为象人类微笑,鸟儿唱歌,蜜蜂跳舞一样,树也有传送信息的方式。 1.A 细节理解题。答案从第一段第五句中查找。 2.B 细节理解题。从第一段最后一句得出。 3.C 细节理解题。从第二段倒数第二句得出。 4.B 观点说明题。作者通过列举人、鸟、蜜蜂的非语言性的交流,认为树发出蒸汽的方式也是一种交流是合乎情理的。 |
举一反三
The plan: turn Mars into a blue world with streams and green fields, and then fill it with creatures (生物) from the earth. This idea may sound like something from a science fiction (科幻小说), but it is actually being taken seriously by many researchers. This suggested future for the “red planet” will be the main topic for discussion at an international conference hosted by NASA (美国宇航局) this week. Leading researchers as well as science fiction writers will attend the event. It comes as NASA is preparing a multibilliondollar Mars research programme. “Turning Mars into a little earth has long been a topic in science fiction,”said Dr Michael Meyer, NASA’s senior scientist for astrobiology (太空生物学). “Now, with scientists exploring the reality, we can ask what are the real possibilities of changing Mars.” Most scientists agree that Mars could be turned into a little earth, although much time and money would be needed to achieve this goal. But many experts are shocked by the idea. “We are destroying our own world at an unbelievable speed and now we are talking about ruining another planet,” said Paul Murdin, of the Institute of Astronomy, Cambridge, UK. Over the past months, scientists have become increasingly confident they will find Martian life forms. Europe and America’s robot explorers have found proof that water, mixed with soil, exists in large amounts on the planet. In addition, two different groups of scientists announced on March 28 that they had found signs of methane (甲烷) in the Martian atmosphere (大气). The gas is a waste product of living creatures and could be produced by microbes (微生物) living in the red planet’s soil. But scientists such as Dr Lisa Pratt, a biologist at Indiana University, say that these microbes will be put in danger by the little earth project. “Before we have even discovered if there is life on Mars, we are talking about carrying out projects that would destroy all these native lifeforms, all the strange microbes that we hope to find buried in the soil,” said Dr Pratt. This view is shared by Monica Grady, a planetary scientist at the Natural History Museum, London. “We cannot risk starting a global experiment that would wipe out the precious information we are looking for.” she said, “This is just wrong.” 5. The passage is about________. A. a plan turning Mars into a little earth B. the necessity of changing Mars C. Mars supporting life D. finding water in the Mars 6. Which of the following is NOT the reason why some scientists are against the plan? A. The project would wipe out all the native lifeforms on the Mars. B. The project will cost too much money and work. C. We would ruin Mars. D. We are destroying our own world at an unbelievable speed. 7. We can infer from the passage that________. A. water is a crucial factor for life B. the project will have little effect on the native lifeforms supposed to live on the Mars C. Monica Grady is in favour of carrying out the little earth project D. the idea turning Mars into a little earth is nothing but a science fiction 8. Which of the following supports the conclusion of microbes living in the Mars’s soil? A. Scientists found liquid water in the Mars. B. Scientists found signs of methane in the Martian atmosphere. C. Scientists found a lot of good soil on the Mars. D. Scientists found some creatures living on the Mars. |
Who has deprived the children"s happiness of learning??? Children are born with a natural desire of learning. They are curios and concerned about 36 around them. They are 37 to learn anything that amazes them. They have so many 38 that they keep on asking. They can bore the 39 all day long with many 40 questions which they will never feel bored with. Why? This is because learning is their 41 , perhaps an instinct of human beings. They just can"t help. But 42 , they feel bored with learning, especially when learning becomes a boring 43 for them, especially after school has become a 44 of their life, especially when they have to 45 teachers who tell them again and again to 46 to recite and memorize things they don"t want to learn, and especially 47 they realize school is not what they once 48 to be but something that, according to their parents, they must rely on in order to 49 a good fame or a good job or a good future. That is to say, learning has become a 50 , which they are forced or 51 to face. So it is the teachers and parents who have thrown the heavy 52 on the children. And meanwhile, the competitive society is also to blame. The children have been 53 of their pleasure and happiness that they could have enjoyed from the natural learning. Therefore, my 54 to the students’ learning is that they 55 enjoy learning, enjoy the pleasure that they could feel from learning itself. Find back the long lost desire and curiosity of learning in their childhood. 36.A.nothing B.anything C.everything D.something 37.A.curious B.proud C.nervous D.eager 38.A.questions B.reactions C.problems D.troubles 39.A.students B.adults C.parents D.teachers 40.A.funny B.boring C.bored D.practical 41.A.ability B.excuse C.characteristic D.nature 42.A.gradually B.eventually C.however D.therefore 43.A.duty B.exercise C.task D.remark 44.A.pleasure B.part C.occasion D.success 45.A.face B.follow C.escape D.imitate 46.A.repeat B.copy C.report D.reply 47.A.before B.since C.after D.when 48.A.forbidden B.attracted C.intended D.expected 49.A.require B.achieve C.earn D.indicate 50.A.promise B.service C.must D.choice 51.A.pleased B.recommended C.obliged D.experienced 52.A.burden B.confidence C.difficulty D.challenge 53.A.informed B.deprived C.accused D.approved 54.A.Encouragement B.persuation C.suggestion D.decision 55.A.must B.should C.might D.could |
Students will need to use all of their skills in order to understand the reading selections in Reader’s Choice. The book 36 many types of selections on a wide 37 of topics. These selections provide practice on 38 different reading skills to get the 39 of the writer. They also give students 40 in four basic reading skills: skimming, scanning, reading for 41 comprehension, and critical reading. Skimming involves reading quickly through a text to get an overall idea of its contents. This kind of rapid reading is 42 when you are trying to decide 43 careful reading is desirable or when there is not 44 to read something carefully. Like skimming, scanning is also quick reading. 45 , in this case the search is more 46 .To scan is to read quickly in order to 47 specific information. When you read to find a 48 date, or number you are scanning. Reading for thorough comprehension is 49 reading in order to understand the total 50 of the passage. 51 this level of comprehension the reader is 52 to summarize the author’s ideas but has not yet made a critical evaluation of those ideas. Critical reading demands that a reader 53 judgments about what he or she reads. This kind of reedit 54 posting and answering questions such as “Does my own experience support that of the author?”, “Do I 55 the author’s point of view?” And “Am I convinced by the author’s arguments and evidence? 36.A.contains B.uses C.put D.writes 37.A.sense B.variety C.kind D.subject 38.A.making B.understanding C.speaking D.employing 39.A.message B.secret C.content D.nature 40.A.power B.point C.practice D.opinion 41.A.better B.basic C.general D.thorough 42.A.suitable B.interesting C.wrong D.true 43.A.that B.if C.when D.why 44.A.interest B.habit C.time D.desire 45.A.Moreover B.Anyway C.However D.Therefore 46.A.funny B.concentrated C.perfect D.important 47.A.deal with B.get in C.go over D.find out 48.A.common B.different C.fine D.particular 49.A.carefully B.slowly C.quickly D.perfectly 50.A.design B.explanation C.meaning D.feeling 51.A.To B.On C.At D.In 52.A.impossible B.able C.difficult D.simple 53.A.makes B.finds C.puts D.offers 54.A.lacks B.requires C.demands D.affords 55.A.tell B.express C.share D.argue |
Washoe is a young chimpanzee(黑猩猩). She is no ___1___ chimpanzee, though. Scientists are doing a research ___2___ her. They want to see how civilized(驯化) she can ___3___. Already she does many things a human being can do. For example, she has been learning how to exchange ___4___ with people. The scientists are teaching her ___5___ language. When she wants to be picked ___6___, Washoe points up with one finger. She rubs her teeth with her finger ___7___ she wants to brush her teeth. This is done after every meal. Washoe has also been ___8___ to think out and find answers to problems. Once she was put in a ___9___ with food hanging from the ceiling. It was too high to ___10___. After she considered the ___11___, she got a tall box to stand ___12___. The food was still too high to be reached. Washoe found a ___13___ pole. Then she climbed onto the ___14___, grasped the pole, and ___15___ down the food with the pole. Washoe ___16___ like a human, too. The scientists keep her in a fully furnished(家具齐全的) house. After a hard ___17___ in the laboratory, she goes home. ___18___ she plays with her toys. She ___19___ enjoys watching television before going to bed. Scientists hope to ___20___ more about people by studying our closest relative(亲属) — chimpanzee. 1. A. foolish B. ordinary C. special D. simple 2. A. for B. by C. to D. on 3. A. experience B. change C. develop D. become 4. A. actions B. views C. messages D. feelings 5. A. sign B. human C. spoken D. foreign 6. A. out B. at C. on D. up 7. A. when B. until C. since D. while 8. A. raised B. trained C. ordered D. led 9. A. cave B. zoo C. room D. museum 10. A. pull B. see C. eat D. reach 11. A. problem B. position C. food D. ceiling 12. A. by B. on C. up D. with 13. A. straight B. strong C. long D. big 14. A. wall B. box C. ceiling D. pole 15. A. knocked B. picked C. took D. shocked 16. A. lives B. acts C. thinks D. plays 17. A. task B. lesson C. day D. time 18. A. Here B. There C. So D. Then 19. A. quite B. already C. even D. still 20. A. observe B. discover C. gain D. learn |
The amount of usable water has always been of great interest in the world. ___36___ springs and streams sometimes means control, particularly in the ___37___ areas like the desert. The control is possible even without possession of large areas of ___38___ land. In the early days of the American West, gun fights were not ___39___ for the water resources (资源). And laws had to be ___40___ to protect the water rights of the ___41___ and the use of the water resources accordingly. 42___ is known to us all, there is not ___43___ water in all places for everyone to use as much as he likes. Deciding on the ___44___ of water that will be used in any particular period 45___ careful planning, so that people can manage and use water more ___46___. Farmers have to change their use of or demand for water ___47___ the water supply forecast (预报). The ___48___ water supply forecast is based more on the water from the ___49___ than from the below. Interest is ___50___ in the ways to increase rainfall by man-made methods, and to get water from the winter snow on mountain ___51___. With special equipment, some scientists are studying the ways in which the mountain snow can be ___52___, and with the help of a repeater station, they send the ___53___ data (数据) to the base station. The operator at the base station can get the data at any time by ___54___ a button. In the near future, the forecast and use of water ___55___ probably depend on the advance knowledge of snow on mountains, not of water underground. 36. A. Using B. Holding C. Owning D. Finding 37. A. dry B. distant C. deserted D. wild 38. A. fine B. beautiful C. rich D. farming 39. A. unlawful B. unacceptable C. unpopular D. uncommon 40. A. made B. designed C. signed D. written 41. A. winners B. settlers C. fighters D. supporters 42. A. That B. It C. What D. As 43. A. plentiful B. enough C. any D. much 44. A. type B. quality C. amount D. level 45. A. requests B. requires C. means D. suggests 46. A. effectively B. easily C. conveniently D. actively 47. A. leading to B. due to C. owing to D. according to 48. A. correct B. further C. average D. early 49. A. clouds B. sky C. air D. above 50. A. raising B. rising C. building D. lasting 51. A. rocks B. tips C. cops D. trees 52. A. taken care of B. made use of C. piled up D. saved up 53. A. picked B. produced C. used D. gathered 54. A. touching B. knocking C. pressing D. turning 55. A. might B. can C. will D. should |
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