2. 外语
  3. A. abuse B. appreciated C. attracted D. linked E. mixture F. union G. perceived

A. abuse B. appreciated C. attracted D. linked E. mixture F. union G. perceived

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问题     A. abuse        B. appreciated        C. attracted        D. linked        E. mixture
    F. union        G. perceived          H. set              I. merge         J. disappear
    K.measured      L. acquired           M. affect           N. estimated     O. offspring
    Alcohol may taste sweeter if you were exposed to it before birth, suggests a study in rats. The findings may shed new light on why human studies have previously【C1】________ fetal (胎儿的) alcohol exposure to increased alcohol【C2】________ later in life, and to a lower age at which a person first starts drinking alcohol.
    Alcohol’s taste is a(n)【C3】________ of sweet and bitter components. To test whether prenatal (产前的) alcohol exposure could【C4】________ the perception of these components, Steven Youngentob at the State University of New York in Syracuse and John Glendinning at Columbia University in New York【C5】________ how eagerly rats consumed alcohol, sweet water or bitter water.
    They found that young rats whose mothers had consumed alcohol during pregnancy preferred alcohol and consumed more of the bitter water than the【C6】________ of mothers that didn’t consume alcohol. Rats that had been exposed to alcohol before birth also seemed to be more【C7】________ to the smell of alcohol.
    Prenatal exposure seems to reduce the【C8】________ bitterness of alcohol, making it seem sweeter, says Youngentob. Both of these differences seemed to【C9】________ once the rats reached adulthood—but only if they hadn’t tasted alcohol during their youth. If prenatally exposed rats did consume alcohol in their youth, these preferences seemed to become【C10】________ for life.
    "The take-home message is to keep kids away from alcohol for as long as possible—particularly if they have had prenatal exposure," says Youngentob.
【C4】
选项
答案M
解析 空格前的could提示空格处应填入动词原形。此处意为“出生前接触酒精是否会 对这些成分的感知”。根据上一段的大致内容，可知胎儿期与酒精接触与出生以后喝酒的情况有关联，即出生前接触酒精可能对出生以后对酒的感知有影响，词库中的affect“影响”代入空格，句意通顺。
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