2. 外语
  3. Opinion polls repeatedly tell us that the only thing Americans worry about more than the environment is their health. This is【C1

Opinion polls repeatedly tell us that the only thing Americans worry about more than the environment is their health. This is【C1

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问题     Opinion polls repeatedly tell us that the only thing Americans worry about more than the environment is their health. This is【C1】______understandable, for health is obviously【C2】______to illness. What makes today’s concern【C3】______health slightly surprising is that Americans are【C4】______healthier now than they have ever been. Many diseases that once【C5】______terror into hearts have either been completely【C6】______or brought under control. Although AIDS is a notable【C7】______， few new mass killers have come out to【C8】______the ones that have been eliminated.【C9】______. health — and the various threats to it — remains everyone’s【C10】______concern. After all, more than half of us (57 percent) will die from either heart disease or cancer, if current【C11】______continues.
    One major problem with any【C12】______of health risks — especially life-threatening ones — is that they【C13】______enormously in their immediacy. For instance, AIDS — if you get it — will probably be【C14】______after a number of years. Cancer induced by smoking or【C15】______to radiation, on the other hand, may take 20 to 30 years【C16】______its fatal effects show【C17】______. In making choices about health risks,【C18】______. it is important to bear in 【C19】______the likely time lag between taking a risk and【C20】______its consequences.
【C17】
选项 A、off
B、out
C、up
D、over
答案C
解析 语义衔接题。四个选项均可以与show搭配使用，但含义不同。show off“炫耀’：show out“送客”：show up“表露，显现”：show over“指引”。结合语境，这里应该是说癌症致命症状的显现，故答案为[C]up。
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大学英语四级

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