[专升本类试卷]专升本英语(阅读)模拟试卷30及答案与解析.doc
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1、专升本英语(阅读)模拟试卷 30 及答案与解析一、Part III Reading ComprehensionDirections: In this part there are four passages. Each passage is followed by a number of comprehension questions. Read the passages and choose the best answer to each question. Then, mark your answer by blackening the corresponding letter on th
2、e Answer Sheet.0 The accuracy of scientific observations and calculations is always at the mercy of the scientist s time-keeping methods. For this reason, scientists are interested in devices that give promise of more precise time-keeping.In their search for precision , scientists have turned to ato
3、mic clocks that depend on various vibrating atoms or molecules to supply their “ticking“. This is possible because each kind of atom or molecule has its own characteristic rate of vibration. Atom in ammonia, for example, vibrates or “ticks“ 24 billion times a second.One such atomic clock is so accur
4、ate that it will probably lose no more than a second in 3000 years. It will be of great importance in fields such as astronomical observation and long-range navigation. The heart of this Atomichron is a cesium(铯)atom that vibrates 9. 2 billion times a second when heated to the temperature of boiling
5、 water.An atomic clock that operates with an ammonia molecule may be used to check the accuracy of predictions based on Einstein s relativity theories, according to which a clock in motion and a clock at rest should keep time differently. Placed in an orbiting satellite moving at a speed of 18,000 m
6、iles an hour, the clock could broadcast its time readings on a similar model. Whatever differences develop would be checked against the differences predicted.1 The selection says that the accuracy of scientific observation depends on _.(A)methods of measurement(B) basic assumptions(C) time-keeping m
7、ethods(D)earlier experiments2 Atomic clocks differ according to_.(A)function(B) the rate of vibration(C) the type of molecule or atom used(D)both B and C3 The Atomichron will be used in_.(A)making astronomical observations(B) measuring vibration rates(C) broadcasting(D)all of the above4 From the sel
8、ection, we may assume that temperature changes_.(A)affect only ammonia molecules(B) may affect the vibration rate of atoms(C) affect the speed at which atoms travel(D)do not affect atoms in any way5 An appropriate title for this selection would be _.(A)A Peacetime Use of the Atom(B) The Satellite Ti
9、mekeeper(C) Atoms and Molecules(D)The Role of the Clock5 Nowadays, with women playing an ever-increasing role in all kinds of careers and professions, it is difficult to understand that there was a time when no medical school would accept a woman. They all said that only a man could be a doctor. An
10、American, Elizabeth Blackwell, was determined to become the first woman doctor in the world. After a great deal of delay and opposition , she received, to her great surprise, a letter from the Dean of Geneva College informing her that she had been accepted.Much later, Elizabeth discovered what had a
11、ctually happened when her application had been received by the College authorities. None of them wanted to have a woman student, but they did not wish to offend the influential Philadelphia doctor who had recommended her, so they hit on the expedient of turning the decision over to the students gene
12、ral meeting. They were quite certain that this would result in this alarming idea being turned down. But when the student body met, many of them thought it would be amusing to be the only medical college in the country which could boast that it was training some sort of Amazon as a woman doctor. Som
13、e genuinely believed that women should be treated equally. While others thought of the whole thing as a joke. So the vote in favor was carried unanimously, and the college authorities found, with dismay, that they would now have to admit Elizabeth.A few days after receiving the notification of her a
14、cceptance, Elizabeth was on the train for the two-day journey to Geneva College.6 It is unbelievable that in the past_.(A)no medical school(B) no good woman doctor(C) medical school would accept a woman student(D)woman medical student could become doctor7 Elizabeth Blackwell_.(A)already knew that he
15、r application would be approved(B) had never expected that she would be admitted(C) never doubted that she would become a medical student(D)always doubted the fact that she became a medical student8 Why were students asked to decide on Elizabeths application?(A)Because the college was democratic.(B)
16、 Because all the policy was decided by students in that college.(C) Because students were more fair than the authorities.(D)Because the college authorities believed that man students would not accept Blackwell meanwhile they would not offend the recommender.9 “Unanimously“(in the second paragraph)me
17、ans_.(A)not the same(B) not agreed(C) not in the same way(D)all agree10 The students agreed to accept Elizabeth Blackwell as fellow student_.(A)for some reason untold(B) they believed in equality of the sexes(C) so as not to offend the authorities(D)because they thought it would be amusing10 All tha
18、t we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. Bu
19、t we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard(编组站). All of the switches( 转辙器)are set before the train arrives,
20、so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch : we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty
21、. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.When we think about the future of the universe, we can
22、 see our “track“ many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.11 According to the passage, it is dif
23、ficult to be certain about the distant future of the universe because we_.(A)have too many conflicting theories(B) do not have enough funding to continue our research(C) are not sure how the universe is put together(D)have focused our investigations on the moon and planets12 What does the author see
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