理工类A级卷一文档格式.docx

1、D. extensive3. She could not answer, it was an immense load off her heart.A. natural B. fatal C. tiny D. enormous4. The book made a great impact on its readers.A. force B. influence C. surprise D. power5. Accompanied by cheerful music, we began to dance.A. pleasant B. colorful C. fashionable D. diff

2、erent6. He was not eligible for the examination because he was over age.A. competitive B. diligent C. qualified D. competent.7. Her novel depicts an ambitious Chinese.A. writes B. sketches C. describes D. indicates8. Dont irritate her, shes on a short fuse today.A. tease B. attract C. annoyD. protec

3、t9. It is absurd to go out in such terrible weather.A. ridiculous B. funnyC. odd D. interesting10. I notified him that my address had changed.A. informed B. observed C. mocked D. misled11. The manager allocate duties to the clerks.A. assign B. persuade C. ask D. order12. The once barren hillsides ar

4、e now good farmland.A. hairlessB. bare C. empty D. bald13. It is postulated that a cure for the disease will have been found by the year 2000.A. challenged B. assumed C. deducted D. decreed14. We must abide by the rules.A. stick to B. persist in C. safeguard D. apply15. From my standpoint, you know,

5、 this thing is just funny.A. position B. point of view C. knowledge D. opinion第2部分：阅读判断（第1622题，每题l分，共7分）下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。Stem Cell Therapy May Help Repair the HeartAccording to scientists in the USA, stem cell therapy may one day

6、be able to repair the hearts of people with heart failure. Researchers at Pittsburgh University School of Medicine examined 20 patients who had severe heart failure and were going to have surgery.They injected stem cells into the parts of their hearts that were damaged, They then compared their hear

7、ts with those of people who had undergone surgery without having the stem cells injected into them（they had also suffered from severe heart failure）. The patients who had had the stem cells injected had hearts that were able to pump（用泵抽运）more blood than the others.According to Professor Robert Kormo

8、s, one of t11e researchers, these results could revolutionize heart treatment. Although previous studies had indicated that there might be a benefit, this is the first study that has actually proved that stem cell therapy can help the failing heart work better.All the patients in this study had hear

9、ts that could not pump blood properly. The scientists measured their ejection fraction（射血分数）. 1t is a measure of heart performance; you measure how much blood is being pumped out by the left ventricle（心室）.Healthy peoples ejection fraction is about 55%. These patients had ejection fraction of under 3

10、5%. They a11 had by-pass surgery（搭桥手术）performed on them. Some of the patients had stem cells taken from their hip bones and injected into 25-30 sites in the damaged heart muscle, Six months later their ejection fraction rate was 46. 1%while those who just had surgery but no stem cell injections aver

11、aged 37 2%.No side effects were reposed.Heart failure is a common problem all over the world. In the UK alone about 650,000 people suffer from heart failure every year. As the number of people suffering from heart failure increases in the world in general these findings are particularly significant.

12、Current treatments relieve the symptoms. This new stem cell therapy actually repairs the damaged muscle in the heart and has the potential of curing the disease.16.The 20 patients had stem cell injections instead of surgery.A. Right B. Wrong C. Not mentioned17.The experiment proved to be satisfactor

13、y.Wrong C. 18.The control group patients regretted not having had stem cell injections.Right B. 19.The study actually proved for the first time the benefit of stem cell therapy.20.The ejection fraction rate of the patients with stem cell injections decreased.Wrong C. Not mentioned21.Heart failure is

14、 more common in the UK than anywhere else in the world.22.Stem cell therapy seems to have great prospects.第3部分：概括大意与完成句子（第2330题，每题l分，共8分）下面的短文后有2项测试任务：（1）第2326题要求从所给的6个选项中为第27段名其中4段选择1个最佳标题；（2）第2730题要求从所给的6个选项中为每个句子确定1个最佳选项。A Killing Power of Ancient Volcanic Eruptions Blasts from the Past1Volcanoes

15、 were destructive in ancient history. Not because they were bigger, but because the carbon dioxide they released wiped out life with greater ease.2Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed o

16、ff large number of animals, but all the mass extinction cover the past 300 million years coincided with huge formations of volcanic rock. To his surprise, the older the massive volcanic eruptions were, the more damage they seemed to do.3Wignall calculated the “killing efficiency” for these volcanoes

17、 by comparing the proportion of life they killed off with the volume of lava that they produced. He found that size for size, older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.4The Permian extinction, for example, which happened 250 million years ago,

18、 is marked by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe. Those volcanoes are thought to have pumped out about 10 gigatonnes of carbon as carbon dioxide. The global warming that followed wiped out 80 per cent of all marine genera at the time, and it took

19、 5 million years for the planet to recover.5Yet 60 million years ago in the late Palacocene1 there was another huge amount of volcanic activity and global warming but no mass extinction. Some animals did disappear but things returned to normal within ten thousands of years. “The most recent ones har

20、dly have an effect at all,” Wignall says. He ignored the extinction which wiped out the dinosaurs at the end of the Cretaceous,265 million years ago, because many scientists believe it was primarily caused by the impact of an asteroid.6Wignall thinks that older volcanoes had more killing power becau

21、se more recent life forms were better adapted to dealing with increased levels of CO2. ocean chemistry may also have played a role. As the supercontinents broke up and exposed more coastline there may have been more weathering of silica rocks. This would have encouraged the growth of phytoplankton i

22、n the oceans, increasing the amount of CO2 absorbed from the atmosphere.7Vincent Courtillot, director of the Paris Geophysical Institute in France, says that Wignall s idea is provocative. But he says it is incredibly hard to do these sorts of calculations. He points out that the killing power of vo

23、lcanic eruptions depends on how long they lasted. And it is impossible to tell whether the huge blasts lasted for thousands or millions of years.8Courtillot also adds that it is difficult to estimate how much lava prehistoric volcanoes produced, and that lava volume may not necessarily correspond to

24、 carbon dioxide or sulphur dioxide emissions.23 Paragraph 2 _24 Paragraph 3 _25 Paragraph 4 _26 Paragraph 5 _A Killing Power of Ancient Volcanic EruptionsB Association of Mass Extinctions with VolcanicC Calculation of the Killing Power of Older EruptionsD A Mass ExtinctionE Volcanic Eruptions That C

25、aused No Mass ExtinctionF Accounting for the Killing Power of Older Eruptions 27 Older eruptions were more devastating. _28 The Permian extinction is used to illustrate. _29 The cause of the extinction of dinosaurs . _30 Courtillor rejects . _A than more recent onesB the killing efficiency for older

26、 eruptionsC has remained controversialD Wignalls calculations as acceptableE has been known to us allF his ideas第4部分：阅读理解（第31-45题，每题3分，共45分）下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。 第一篇Researchers Discover Why Humans Began Walking Upright Most of us walk and carry items in our hands every day. These ar

27、e seemingly simple activities tllat the majority of us dont question. But an international team of researchers, including Dr. Richmond from GWs Columbian College of Arts and Sciences, have discovered that human walking upright, may have originated millions of years ago as art adaptation to carrying

28、scarce, high-quality resourcesThe team of researchers from the U. S. , England, Japan and Portugal investigated the behavior of modem. day chimpanzees as they competed for food resources, in an effort to understand what ecological settings would lead a large apeone that resembles the 6 million-year

29、old ancestor we shared in common with living chimpanzees-to walk on two legs. “These chimpanzees provide a model of the ecological conditions under which our earliest ancestors might have begun walking on two legs, ”said Dr. Richmond The research findings suggest that chimpanzees switch to moving on

30、 two limbs instead of four in situations where they need to monopolize a resource. Standing on two legs allows them to calTy much more at one time because it flees up their handsOver time, intense bursts of bipedal activity4 may have led to anatomical changes that in turn became the subject of natural selection where competition for food or other resources was strong. Two studies were conducted by the team in GuineaThe first stu