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  3. Throughout history, man has had to accept the fact that all living things must die, but people now live longer than they used to

Throughout history, man has had to accept the fact that all living things must die, but people now live longer than they used to

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问题     Throughout history, man has had to accept the fact that all living things must die, but people now live longer than they used to. Yet, all【C1】______things still show the effect of aging, which will eventually【C2】______death. The body and the【C3】______, they do not function as well as they【C4】______in childhood and adolescence(青春期). The body provides less【C5】______against disease and is more prone(易于……的)【C6】______accident.
    A number of related causes may【C7】______to aging. Some cells of the body have a【C8】______long life, but they are not【C9】______when they die. As a person ages,【C10】______of brain cells and muscle cells decreases.  Other body cells did and are replaced by new cells. In an aging person the【C11】______cells may not be as viable(能生存的)or as capable【C12】______growth as those of a young person.
    Another factor in aging may be changes within the cells【C13】______. Some of the protein chemicals in cells【C14】______known to change【C15】______age and become less elastic. This is why the skin of old people wrinkles and hangs loose. This is also the reason old people shrink in【C16】______. There may be other more important chemical changes in the cells. Some complex cell chemicals.【C17】______DNA and RNA, store and【C18】______information that the cells need. Aging may【C19】______this process and change the information carrying molecules【C20】______they do not transmit the information as well.
【C2】
选项 A、result in
B、result from
C、end in
D、conclude
答案A
解析 result in 导致；result from 由于……而发生；end in以……结尾；conclude ut．结束。result in和result from 主宾位置刚好相反，例如：His practice results in his success；his success results from his practice．他的成功在于练习。象这样主宾位置相反的还有be familar to，be familiar with，例：We are familar with this word．和 This word is familar to us．同义：我们对这个单词很熟悉。其实，这些词组也没有必要死记，要善于分析介词，理解词组含义。result in 中的in表示“结果于一点，集中于一点”；result from中的from为“来自”；familar with中的“with”表示“对……方面”；to 后面接人，即“对某人而言”，故有familar to，可把 to sb看做单独部分理解。
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大学英语四级

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