[外语类试卷]北京大学考博英语模拟试卷3及答案与解析.doc
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1、北京大学考博英语模拟试卷 3及答案与解析 一、 Structure and Vocabulary 1 On the first day when a pupil enters school, he is asked to_to the school rules. ( A) concede ( B) conform ( C) comply ( D) confront 2 Once the_contradiction is grasped, all problems will be readily solved. ( A) principle ( B) principal ( C) potenti
2、al ( D) primitive 3 If you want to go to the concert, youll have to make a_, or there will be no tickets. ( A) reservation ( B) punctuality ( C) compliment ( D) clarity 4 I arrive at nine oclock, teach until twelve thirty and then have a meal; that is my morning_. ( A) habit ( B) custom ( C) practic
3、e ( D) routine 5 David_his companys success to the unity of all the staff and their persevering hard work. ( A) attributed ( B) contributed ( C) acknowledged ( D) pledged 6 Youve been talking with David all evening when you ought to be_with other guests. ( A) blending ( B) integrating ( C) mingling
4、( D) incorporating 7 I asked my mother if I could go out, and she_. ( A) descended ( B) contented ( C) consented ( D) ascended 8 The room is so_with furniture-that it is hard to move about ( A) muddled ( B) cluttered ( C) distributed ( D) scattered 9 Cant you speak more_to your parents? ( A) respect
5、ably ( B) respectingly ( C) respectively ( D) respectfully 10 Some_good luck brought us nothing but trouble. ( A) seemingly ( B) satisfactorily ( C) uniformly ( D) universally 11 Sometimes children have trouble_fact from fiction and may believe that such things actually exist ( A) to separate ( B) s
6、eparating ( C) for separating ( D) of separating 12 Although punctual himself, the professor was quite used_ate for his lecture. ( A) to have students ( B) for students being ( C) for students to be ( D) to students being 13 Its no use_me not to worry. ( A) you tell ( B) your telling ( C) for you to
7、 have told ( D) having told 14 _all our kindness to help her, Sara refused to listen. ( A) At ( B) In ( C) For ( D) On 15 The children prefer camping in the mountains_an indoor activity. ( A) to ( B) than ( C) for ( D) with 16 _of the burden of ice, the balloon climbed up and drifted to the South. (
8、 A) To be free ( B) To free ( C) Freeing ( D) Freed 17 _quite recently, most mothers in Britain did not take paid work outside the home. ( A) Until ( B) Before ( C) From ( D) Since 18 _enough time and money, the researchers would have been able to discover more in this field. ( A) Giving ( B) To giv
9、e ( C) Given ( D) Being given 19 Not only_us light, but also it gives us heat ( A) the sun gives ( B) the sun does give ( C) gives the sun ( D) does the sun give 20 _ the claim about German economic might, it is somewhat surprising how relatively small the German economy actually is. ( A) To give (
10、B) Given ( C) Giving ( D) Having given 二、 Reading Comprehension 20 Gene therapy and gene-based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be others as well. Here is one of the remarkable therapies on the cutting edge of genetic research that could
11、 make their way into mainstream medicine in the coming years. While its true that just about every cell in the body has the instructions to make a complete human, most of those instructions are inactivated, and with good reason: the last thing you want for your brain cells is to start churning out s
12、tomach acid or your nose to turn into a kidney. The only time cells truly have the potential to turn into any and all body parts is very early in a pregnancy, when so-called stem cells havent begun to specialize. Yet this untapped potential could be a terrific boon to medicine. Most diseases involve
13、 the death of healthy cells brain cells in Alzheimers, cardiac cells in heart disease, pancreatic cells in diabetes, to name a few if doctors could isolate stem cells, then direct their growth, they might be able to furnish patients with healthy replacement tissue. It was incredibly difficult, but l
14、ast fall scientists at the University of Wisconsin managed to isolate stem cells and get them to grow into neural, gut, muscle and bone cells. The process still cant be controlled, and may have unforeseen limitations; but if efforts to understand and master stem-cell development prove successful , d
15、octors will have a therapeutic tool of incredible power. The same applies to cloning, which is really just the other side of the coin; true cloning, as first shown with the sheep Dolly two years ago, involves taking a developed cell and reactivating the genome within, resetting its developmental ins
16、tructions to a pristine state. Once that happens, the rejuvenated cell can develop into a full-fledged animal, genetically identical to its parent For agriculture, in which purely physical characteristics like milk production in a cow or low fat in a hog have real market value, biological carbon cop
17、ies could become routine within a few years. This past year scientists have done for mice and cows what Ian Wilmut did for Dolly, and other creatures are bound to join the cloned menagerie in the coming year. Human cloning, on the other hand, may be technically feasible but legally and emotionally m
18、ore difficult Still, one day it will happen. The ability to reset body cells to a pristine, undeveloped state could give doctors exactly the same advantages they would get from stem cells: the potential to make healthy body tissues of all sorts, and thus to cure disease. That could prove to be a tru
19、e “miracle cure“. 21 The writer holds that the potential to make healthy body tissues will_ ( A) aggravate moral issues of human cloning. ( B) bring great benefits to human beings. ( C) help scientists decode body instructions. ( D) involve employing surgical instruments. 22 The word “rejuvenated“ (
20、Para. 5) most probably means_ ( A) modified. ( B) re-collected. ( C) classified. ( D) reactivated. 23 The research at the University of Wisconsin is mentioned to show_ ( A) the isolation of stem cells. ( B) the effects of gene therapies. ( C) the advantages of human cloning. ( D) the limitations of
21、tissue replacements. 24 Which of the following is true according to the text? ( A) The principle of gene therapy is applicable to that of cloning. ( B) The isolation of stem cells is too difficult to be feasible. ( C) It is reasonable for all body instructions to be activated. ( D) Cloned animals wi
22、ll eventually take control of the world. 24 What our society suffers from most today is the absence of consensus about what it and life in it ought to be; such consensus cannot be gained from societys present stage, or from fantasies about what it ought to be. For that the present is too close and t
23、oo diversified, and the future too uncertain, to make believable claims about it A consensus in the present hence can be achieved only through a shared understanding of the past, as Homers epics informed those who lived centuries later what it meant to be Greek, and by what images and ideals they we
24、re to live their lives and organize their societies. Most societies derive consensus from a long history, a language all their own, a common religion, common ancestry. The myths by which they live are based on all of these. But the United States is a country of immigrants, coming from a great variet
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