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As children move towards adulthood(成年),they become taller,stronger,and more independent At some point in adulthood, 21 ,a slow decline begins.Their hair often 22 g hr skin wrinkles,and their muscles begin to 23 Their short-term memory may suffer,and they often 24 part of their vision or hearing.
Scientists are not 25 sure what causes the effects of aging.The body might have a time26 which would determine how long the cells can remain 27_.Depending on the type of animal and its environment,animals age at different rates and live 28 different lengths of time.An animal in a good zoo-well 29_and protected from predators(捕食者)—often lives longer than the same type in the wild. 30_,people who live in rich countries generally live longer than 31 in poor countries.
genetics(遗传) .In some families,it seems that many 33 have long lives. Genetics may also
determine whether people 34 P w h
minds 35 and often communicate wih friends will feel younger and may live longer. People who keep a normal weight,exercise,and do not smoke may also age more slowly.27填
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A、healthy
B、bright
C、stable
D、secure
答案是:A
解析：【答案】 A
考情点拨】形容词辨析题。
应试指导】本句句意：身体可能有一个时间限制，这个时间限制将决定细胞能保持健康多久。 healthy 意为“健康的”, bright 意为“明亮的”, stable 意为“稳定的”, secure 意为“安全的”。根据句意，故选 A 。
出自
成人高考 > 英语 >
2021年成人高考专升本《英语》真题试卷与答案
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