题目

三完形填空Throughout history man has had to accept the fact that all living things must die, but people now live longer than they underline(51) . Yet, all living things still show the underline(52) of aging, which will eventually underline(53) death.Aging is not a disease, but as a person passes maturity, the cells of the body and the organs they form do not function as well as they did in childhood. The body provides less underline(54) against diseases and is more inclined underline(55) accident.A number of related causes may contribute to aging. Some cells of the body have a fairly long life, but they are not underline(56) when they die. In an aging person the new cells may not be as capable underline(57) growth as those of a young person.Another underline(58) in aging may be changes within the cells themselves. Some of the protein chemicals in cells are known to change with age and become less flexible. This is why the skin of old people wrinkles. This is also the reason old people underline(59) in height. There may be other more important chemicals changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and underline(60) information that the cells need. Aging may affect this process and change the information-carrying molecules so that they do not transmit the information as well.(20分)51、A had B use to C were used to D used to52、A fact B effect C function D symbol53、A affect B produce C result in D result from54、A protection B demand C decline D delay55、A to B for C against D from56、A replaced B born C recovered D discovered57、A with B for C of D to58、A factor B effect C reason D element59、A short B shrink C lengthen D increase60、A pass to B pass from C pass on D pass on to

三完形填空 Throughout history man has had to accept the fact that all living things must die, but people now live longer than they $\underline{51}$ . Yet, all living things still show the $\underline{52}$ of aging, which will eventually $\underline{53}$ death. Aging is not a disease, but as a person passes maturity, the cells of the body and the organs they form do not function as well as they did in childhood. The body provides less $\underline{54}$ against diseases and is more inclined $\underline{55}$ accident. A number of related causes may contribute to aging. Some cells of the body have a fairly long life, but they are not $\underline{56}$ when they die. In an aging person the new cells may not be as capable $\underline{57}$ growth as those of a young person. Another $\underline{58}$ in aging may be changes within the cells themselves. Some of the protein chemicals in cells are known to change with age and become less flexible. This is why the skin of old people wrinkles. This is also the reason old people $\underline{59}$ in height. There may be other more important chemicals changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and $\underline{60}$ information that the cells need. Aging may affect this process and change the information-carrying molecules so that they do not transmit the information as well. (20分) 51、A had B use to C were used to D used to 52、A fact B effect C function D symbol 53、A affect B produce C result in D result from 54、A protection B demand C decline D delay 55、A to B for C against D from 56、A replaced B born C recovered D discovered 57、A with B for C of D to 58、A factor B effect C reason D element 59、A short B shrink C lengthen D increase 60、A pass to B pass from C pass on D pass on to

题目解答

答案

这是一篇关于人类衰老过程的完形填空。文章探讨了虽然人类寿命比以前更长，但衰老仍是不可避免的过程，并从细胞功能下降、细胞自身变化以及遗传信息传递改变等方面解释了衰老的原因。

以下是逐题的推导过程及答案：

51题：
句意为“纵观历史，人类不得不接受所有生物都会死亡的事实，但人们现在比他们过去活得长”。这里需要一个短语表示“过去常常（活得长）”。
A. had（有）；B. use to（语法错误，应为used to）；C. were used to（习惯于）；D. used to（过去常常）。
“used to do”表示过去经常发生的动作或存在的状态，符合语境。
答案：D

52题：
句意为“然而，所有生物仍然显示出衰老的……，这最终会导致死亡”。这里需要一个词来描述衰老带来的影响或现象。
A. fact（事实）；B. effect（影响，效果）；C. function（功能）；D. symbol（象征）。
“show the effect of aging”意为“显示出衰老的影响/效应”，符合逻辑。
答案：B

53题：
句意为“这最终会……死亡”。衰老带来的结果最终是死亡。
A. affect（影响）；B. produce（产生）；C. result in（导致）；D. result from（起因于）。
“result in”意为“导致，引起”，表示衰老最终导致死亡的结果。
答案：C

54题：
句意为“身体对疾病的……减少，并且更容易……事故”。身体机能下降，对疾病的抵抗力减弱。
A. protection（保护）；B. demand（需求）；C. decline（下降）；D. delay（延迟）。
“provide protection against diseases”意为“提供对抗疾病的保护”，符合语境。
答案：A

55题：
句意为“身体对疾病的保护减少，并且更容易……事故”。这里考查固定搭配“be inclined to do sth.”，意为“倾向于做某事，易于……”。
A. to；B. for；C. against；D. from。
答案：A

56题：
句意为“身体的一些细胞寿命相当长，但当它们死亡时，不会被……”。这里指细胞死亡后没有新的细胞来替代。
A. replaced（替代）；B. born（出生）；C. recovered（恢复）；D. discovered（发现）。
“be replaced”意为“被替换”，符合细胞新陈代谢的语境。
答案：A

57题：
句意为“在老年人身上，新细胞可能不像年轻人那样有能力……生长”。这里考查固定搭配“be capable of”，意为“有能力做……”。
A. with；B. for；C. of；D. to。
答案：C

58题：
句意为“衰老的另一个……可能是细胞本身的变化”。前文提到了一些导致衰老的原因，这里继续列举另一个因素。
A. factor（因素）；B. effect（影响）；C. reason（原因）；D. element（元素）。
“factor”在这里指导致衰老的因素，符合上下文。
答案：A

59题：
句意为“这也是老年人身高……的原因”。前文提到蛋白质变硬导致皮肤起皱，这里指细胞结构变化导致身高变矮。
A. short（短的）；B. shrink（收缩，变矮）；C. lengthen（变长）；D. increase（增加）。
“shrink in height”意为“身高缩水/变矮”，符合老年人身体特征。
答案：B

60题：
句意为“一些复杂的细胞化学物质，如DNA和RNA，储存并……细胞所需的信息”。DNA和RNA的作用是存储并传递遗传信息。
A. pass to（传给）；B. pass from（从……传）；C. pass on（传递）；D. pass on to（传给）。
“pass on information”意为“传递信息”，符合生物学常识。
答案：C