1、国家公共英语（二级）笔试模拟试卷 245及答案与解析 第一节 听下面 5段对话。每段对话后有一道小题，从题中所给的 A、 B、 C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有 10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1 What will the man probably do next? （ A） Ask the woman for some vegetables. （ B） Get a receipt for his purchase. （ C） Call the womans mother. 2 What does Mike have? （
2、 A） A car. （ B） A bus. （ C） A bar. 3 What does the man mean? （ A） Hes afraid to take exams. （ B） He only took the fourth exam. （ C） He didnt get the highest score on one exam. 4 What does the woman advise the man to do? （ A） Approach the problem in a logical fashion. （ B） Time how long it takes to s
3、olve the problem. （ C） Be patient with the problem. 5 What does the man mean? （ A） He is very interested in working. （ B） Hell work even though he doesnt want to. （ C） He doesnt need much money. 第二节 听下面 5段对话或独白。每段对话或独白后有几道小题，从题中所给的 A、 B、 C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有 5秒钟的时间阅读各个小题；听完后，各小题将给出
4、5秒钟的作答时间。每段对话或独白读两遍。 6 What time is it now? （ A） 7:45 （ B） 8:15 （ C） 8:45. 7 What can we learn from the conversation? （ A） The mans watch was fast. （ B） The mans watch was slow. （ C） The womans watch needs repairing. 8 What did the widow do to the police and the County Council officials? （ A） She gr
5、eeted them with a bunch of flowers. （ B） She entertained them with hot tea. （ C） She poured hot water on them. 9 Why did all the other residents agree to move? （ A） Because they could move into new flats with more rooms than their old ones. （ B） Because they liked to move into new flats. （ C） Becaus
6、e they could move into new flats not far from their old homes. 10 What is the woman studying? （ A） The basic structure of atoms. （ B） The basic structure of molecules. （ C） The basic structure of neutrons. 11 What does the woman expect to learn from her study? （ A） The kinds of molecules in which ca
7、rbon may be replaced by silicon. （ B） The importance of silicon. （ C） The difference between molecules and silicon. 12 What is the advantage of silicon over carbon? （ A） Silicon is much more uncommon than carbon. （ B） Carbon is much more common than silicon. （ C） Silicon is much more common. 13 Whic
8、h of the following is not mentioned? （ A） Medicine is widely used in life. （ B） With medicine, you can do whatever you like. （ C） Medicine can also help us with learning languages. 14 What can we learn from the dialogue? （ A） There are pills to make you hungry. （ B） There are pills for seasickness a
9、nd homesickness. （ C） There are pills for colds and headaches. 15 Is there a pill to make somebody hungry? （ A） Yes. （ B） No. （ C） Its not clear. 16 What discovery was the basis of photography? （ A） Light darkens silver salt. （ B） Light darkens natural salt. （ C） Light darkens silver. 17 How was the
10、 first prominent picture made? （ A） By making use of special paper. （ B） By adding common salt to silver salt. （ C） By using a special piece of metal. 18 What does the speaker regard as the official date of the beginning of photography? （ A） 1727. （ B） 1826. （ C） 1839. 19 According to the speaker,wh
11、y was Matthew Brady remembered today? （ A） He was a soldier. （ B） He took war photographs. （ C） He painted portraits. 20 What did Doctor Edward Land invent? （ A） A cheap process of developing films at home. （ B） A new kind of film. （ C） An“instant“camera that develops its own film. 单项填空 21 American
12、people are not very happy on April 15, when the federal taxes are_. （ A） high （ B） near （ C） close （ D） due 22 Some language learners find_difficult to succeed in other fields of science. （ A） that （ B） so （ C） it （ D） them 23 Animals can live only on_plants have already turned from inorganic to veg
13、etable matter. （ A） that （ B） which （ C） what （ D） how 24 A few years ago, the belief became general _orange juice and milk should never be drunk at the same meal. （ A） that （ B） so that （ C） and that （ D） now that 25 The real difference between plants and animals_in what they do, and not in what th
14、ey seem to be. （ A） is laid （ B） is lain （ C） lays （ D） lies 26 We now know that about_all the kinds of seaweed are animals. （ A） one fourth （ B） one fourth of （ C） one four of （ D） the one fourth 27 Scientists could see many things that most people would_to see. （ A） feel （ B） fail （ C） fall （ D） f
15、ill 28 The children stay in the nuclear family_they grow up and marry. （ A） because （ B） once （ C） after （ D） until 29 Sometimes problems grow out of a_observation. （ A） charge （ B） change （ C） chance （ D） choice 30 Eager buyers bought all_50 of the items in one weekend. （ A） but （ B） yet （ C） out （
16、 D） beyond 31 Her cooking is good but it lacks_. （ A） variety （ B） vary （ C） various （ D） varied 32 It is a brave man who_for his beliefs when under attack. （ A） stands out （ B） stands forward （ C） stands up （ D） stands by 33 Bees live through the winter on their_food. （ A） store （ B） storage （ C） s
17、tored （ D） storing 34 In his speech the Minister of Industry said that industrial exports went up for five _years. （ A） successful （ B） successive （ C） continual （ D） continuous 35 There were no blue shirts on display,so the assistant went to see if they had any in_. （ A） stock （ B） store （ C） provi
18、sion （ D） supply 完形填空 35 My daughter has been crazy about raising a pet(宠物 )for a long time. Last spring I bought two newly-hatched chickens for her. She got 36 and took good care of them. 37 ,a few days later,both chickens died. She burst into tears from 38 I helped her 39 the two birds under a tre
19、e behind our house. I thought it would be the 40 of her ideas. 41 I was wrong,children are children 42 The failure hasnt 43 my daughter in any way. She still tried to keep a small animal or even a snail. One day last winter,I noticed under the eaves(屋檐 )of the house a family of sparrows. My daughter
20、 and I could 44 the sparrows as our“pets“,but we didnt. So I told her to 45 the grains on the windowsill. A few minutes later,the sparrows came to land on the windowsill 46 and pecked at the rice. Suddenly my daughter asked me,“Mum, can we catch and 47 the sparrows, and let them live with us in the
21、room? How 48 it is for them to live outside?“ “Oh,my dear,I do not think its a good idea. You know,“I explained to her,“the sparrow is a bird who loves 49 . No one can keep them in a cage. If they are caught ,they will 50 quickly. They are 51 to living outside. Moreover, they have warm nest under th
22、e leaves. “ From then on,we have set up a kind of 52 with the sparrow family. We feed them frequently and 53 them as pet birds. However,we do not need to 54 them. We 55 seeing these little birds flying and jumping among branches,leaves and flowers in the spring mornings. （ A） exciting （ B） excited （
23、 C） disappointed （ D） encouraged （ A） Naturaly （ B） Suddenly （ C） Unfortunately （ D） Finally （ A） excitement （ B） feeling （ C） sorrow （ D） heart （ A） bury （ B） put （ C） dig （ D） set （ A） end （ B） beginning （ C） wish （ D） reality （ A） Thus （ B） Then （ C） Therefore （ D） However （ A） at all （ B） in all
24、 （ C） after all （ D） for all （ A） upset （ B） encourage （ C） help （ D） impress （ A） look （ B） act （ C） catch （ D） feed （ A） throw （ B） pour （ C） pile （ D） scatter （ A） one after another （ B） one another （ C） every other （ D） each other （ A） stay （ B） cage （ C） love （ D） watch （ A） free （ B） happy （ C
25、） cold （ D） warm （ A） freedom （ B） spring （ C） trees （ D） flying （ A） please （ B） starve （ C） suffer （ D） die （ A） safe （ B） proud （ C） happy （ D） used （ A） neighbour （ B） understanding （ C） friendship （ D） relationship （ A） think （ B） dream （ C） treat （ D） appreciate （ A） hurt （ B） possess （ C） bel
26、ong to （ D） hatch （ A） enjoy （ B） would like （ C） want （ D） consider 55 “There is no arguing about taste“ runs the Latin proverb. But taste did not just happen. Cultural, historical, biological and environmental events have interacted to cause frogs, for example, to be viewed as delicious in souther
27、n China but to be regarded with revulsion (厌恶 ) in northern China. Even though much remains unknown, tastes cannot be dismissed as inarguable or illogical; an attempt will be made here to discover why, as Lucretius put it, “What is food to one man may be fierce poison to others?“ Among the approxima
28、tely thirty million tribal people of India, a total of 250 animal species are avoided by one group or another. Most of these people will not eat meat from a tiger or any of various snakes. Although they say they feel a relationship with these animals, it is obvious that both are highly dangerous and
29、 that hunting them systematically would be foolish. Monkeys are avoided, probably because they look like human beings in appearance; in these tribes, man-eating is viewed as extremely cruel. A reluctance to eat some female animals has been attributed to respect for the mothers role, but it could als
30、o be due to a policy of allowing the females to reproduce and provide more young for people. Many tribes avoid eating any animal that has died of unknown causes, an intelligent attitude in view of the possibility that the animal might have died from a disease that could spread to humans. Animals tha
31、t consume garbage are similarly avoided, an adaptive step that prevents contact with para-sites (寄生虫 ), and that might explain why members of one tribe eat any of twenty-one different species of rats, but not the house rat. 56 “There is no arguing about taste“,which means_. （ A） people dont like to
32、talk about food （ B） ones taste in food is hard to explain （ C） there is no quarrelling about what to eat （ D） no arguments about taste have been heard of before 57 It can be concluded from the first paragraph that_. （ A） the author is against eating frogs （ B） taste is illogical and inarguable （ C）
33、 some types of frogs are poisonous （ D） taste is influenced by many factors 58 The tribal people in India dont eat snakes because_. （ A） they are very dangerous （ B） they are respected by Indians （ C） they may spread disease （ D） they help kill rats 59 The tribal people in India may not eat the foll
34、owing animals EXCEPT_. （ A） donkeys （ B） tigers （ C） female deer （ D） house rats 59 Everyone talks about the “five “senses of man. And it is true that we get our information about the outside world from our sense of sight, hearing, smell, touch and taste. Researchers tell us that sense of sight our
35、visual(视觉的 )sense gives us up to 80% of what we know about the world outside our bodies; while the other senses, the auditory(hearing), the olfactory (smell), the tactile(touch) , and the gustatory(taste) bring into our brains information about the other twenty percent of what is happening. But ther
36、e are two other senses that we cannot get along without it, though they are seldom noticed. These are the sense of balance, without which we would act like a drunk man after a heavy drink, and the kinesthetic(运动觉的 ) sense, which gives us our ideas about our own motion(行动 ). 60 The senses of hearing,
37、 smell, touch and taste supply us with_. （ A） about 80% of our information about the world （ B） about half of our information about the world （ C） about 20% of our information about the world （ D） all the needed information about the world 61 According to the passage, one misses most about the world
38、 when one_. （ A） is blind （ B） is deaf （ C） has no sense of taste and touch （ D） has no sense of balance and motion 62 We know our own movements as a result of_. （ A） the sense of balance （ B） the visual sense （ C） the five senses （ D） the kinesthetic sense 63 Drinking too much might affect ones_. （
39、 A） visual sense （ B） sense of balance （ C） kinesthetic sense （ D） sense of hearing 63 A new kind of radar has been developed for spaceship travelers. A working laboratory model of a new system of radar that makes use of a beam of light is said to be ten thousand times more accurate than the best co
40、mparable system of radar that uses microwaves. The model has shown that this radar system, known as laser-doppler radar, can measure with absolute precision speeds varying from spaceship orbital injection(进入 ) velocities (速度 )of five miles per second down to virtual stops speeds of less than one ten
41、-thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous (对待 ) between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could ri
42、p open a ships skin, or a nudge could knock the station out of its orbit. The light-beam radar, which operates at a frequency of trillions of cycles(百万兆 )per second, could easily detect and measure the movement of vehicles edging up to a satellite space station. A control system using so precise a s
43、ignal as this would allow a huge vehicle to dock at a space station as lightly as a feather. 64 Laser-doppler radar_. （ A） measures the movement of a spaceship by means of light beams （ B） makes use of microwaves （ C） makes use of sound waves （ D） both A and B 65 Laser-doppler radar is especially va
44、luable in space missions because_. （ A） it is one thousand times more precise than microwave radar （ B） it provides precise measures of the velocity of space vehicles （ C） it is a new system of radar （ D） it can measure the movement of a spaceship less accurately than a microwave radar 66 Which of t
45、he following statements is NOT true according to the passage_. （ A） accuracy in speed measurement is essential to spaceships （ B） the speeds of space vehicles will vary greatly （ C） inaccuracies in measurement could cause accidents in space missions （ D） a bump could affect the preciseness of the la
46、ser-doppler radar 67 It is implied but not stated in the passage that_. （ A） Laser-doppler radar is more accurate than microwave radar （ B） Microwave radar may not ensure absolute precision in measuring varying speeds （ C） The light-beam radar can measure only slow speeds with accuracy （ D） Microwav
47、e radar operates at a higher frequency than laser-doppler radar 67 Whether there are sailors who sail without charts(航海图 )is doubtful, but there certainly are travellers who prefer to journey with no map to guide them, and readers who are contemptuous of books about books. They gain no profit, they
48、say, by looking at things through the eyes of others. But this impromptu(无法准备 ) ,uninstructed way of grasping at masterpieces(杰作 ) in spontaneous(自发的 )leaps of feeling is but a poor way of learning how to enjoy them. The first surprise and flush of prompt delight is, of course, of great perhaps the
49、greatest value; but a true appreciation is based on something more than feeling; it demands that we should not only enjoy, but understand our pleasure, and make it food for thought; should learn the esthetics reasons for it, and learn also all we can learn about the origins and environments of the monuments and masterpieces we gaze on. To understand them we must know their place in history, and their relative position among othe
