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大学试题答案(课后习题答案)

单项选择题

第三篇 Is the News Believable?
Unless you have gone through the experience, yourself or watched a loved one's struggle, you really have no idea just how desperate cancer can make you. You pray, you rage, you bargain with God, but most of all you clutch at any hope, no matter how remote, of a second chance at life.
For a few excited days last week, however, it seemed as if the whole world was a cancer patient and that all humankind had been granted a reprieve (痛苦减轻). Triggered by a front-page medical news story in the usually reserved New York Times, all anybody was talking about-- on the radio, on television, on the Internet, in phone calls to friends and relatives -- was the report that a combination of two new drugs could, as the Times. put it, 'cure cancer in two years.'
In a matter of hours patients had jammed their doctors' phone lines begging for a chance to test the miracle cancer cure. Cancer scientists raced to the phones to make sure everyone knew about their research too, generating a new round of headlines.
The time certainly seemed ripe for a breakthrough in cancer. Only last month
scientists at the National Cancer Institute announced that they were halting a clinical trial of a drug called tamoxifen (他莫昔芬) － and offering it to patients getting the placebo (安慰剂) --- because it had proved so effective at preventing breast cancer (although it also seemed to increase the risk of uterine (子宫的) cancer). Two weeks later came the New York Times' report that two new drugs can shrink tumors of every variety without any side effects whatsoever.
It all seemed too good to be true, and of course it was. There are no miracle cancer drugs, at least not yet. At this stage all the drug manufacturer can offer is some very interesting molecules, and the only cancers they have cured so far have been in mice. By the middle of last week, even the TV talk-show hosts who talked most about the news had learned what every scientist already knew: that curing a disease in lab animals is not the same as doing it in humans. 'The history of cancer research has been a history of curing cancer in the mouse,' Dr. Richard Klausner, head of the National Cancer Institute, told the Los Angeles Times. 'We have cured mice of cancer for decades － and it simply didn't work in people.'
第 41 题 According to the passage, a person suffering from cancer will
A． give up any hope.
B．pray for the health of his loved ones.
C． go out of his way to help others.
D． seize every chance of survival.
A.
For
B.'
In
C.
The
D.
It
E.'
F.
B．pray
G.
C．
H.
D．
I.
相关考题

单项选择题 tumorC． thingD． group

单项选择题 English and English Community 1 There is no doubt that English is a useful language. The people who speak English today make up the largest speech community in the world with the exception of speakers of Chinese.2 A speech community is similar to other kinds of communities. The people who make up the community share a common language. Often they live side by side, as they do in a neighborhood (街坊), a village, or a city. More often they form. a whole country.National boundaries, however, are not always the same as the boundaries of a speech community. A speech community is any group of people who speak the same language no matter where they happen to live.3 We may say that anyone who speaks English belongs to the English speechcommunity. For convenience (方便), we may divide the speakers into two groups: one in which the speakers use English as their native language, the other in which the speakers learn English as a second language for the purpose of education, commerce,and so on.4 Learning a second language extends one's vision and expands the mind. Thehistory and literature of a second language record the real and fictional (虚构的) lives of people and their culture; a knowledge of them adds to our ability to understand and to feel as they feel. Learning English as a second language provides another means of communication through which the window of the entire English speech community becomes a part of our heritage. 第 23 题 Paragraph 1______

单项选择题 Lowering the Risk of Heart Disease Like millions of other Americans, I come from a family with a history Of heart disease. My father had his first three heart attacks when he was only thirty-one.__________(46)I grew up with heart disease. It was there, but I didn't take it seriously.When I was thirty-one, my blood cholesterol (胆固醇) level was measured for the first time. It was 311 mg/dl, the doctor told me--an extremely high level that put me at a very high risk of heart disease, 'especially with my family history. He sent me to the National Institutes of Health (NIH) to be screened for participation in a clinical trial. _________(47)At NIH, physicians explained the degree of risk associated with my bloodcholesterol level and the nature of the experiment. This test involves putting a tube through a leg artery (动脉) up to the heart._________(48)Learning about the risks of the experiment as well as the risk associated with my raised blood cholesterol level scared the life out of me. Although I was excluded from participating in the study, the experience may well have saved my life.For the first time, I began to realize the seriousness of high blood cholesterol.___________(49) But equally important, I got a taste of what it is like to be a patient, to have tests done on me and to think of myself as sick. This was hard to take.This experience taught me two lifesaving lessons. First, although I felt fit and strong, I was actually at high risk for heart disease because of my high blood cholesterol level. And with my family history, it could not be ignored.___________(50) A．The death rate for the test was only 1 in 100, I was assured.B．Second, I could lower my blood cholesterol level simply by changing what I ate.C．I was three years old at that time.D．There is not enough oxygen in the blood.E． It was a heart attack just waiting to happen.F． The trial was designed to test the effect of lowering blood cholesterol on the risk of heart disease. 第 46 题 请选择（46）处的最佳答案．

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