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We are used to the idea of aging in ourselves. We are so used to this that it comes as a surprise to find that there may be some
We are used to the idea of aging in ourselves. We are so used to this that it comes as a surprise to find that there may be some
admin
2013-05-15
12
问题
We are used to the idea of
aging
in ourselves. We are so used to this that it comes as a surprise to find that there may be some animals that do not age. Sea anemones(海葵)are an example. Some have been kept for nearly a century without showing any signs of lifelessness. Some kinds of sea worms can even "grow backwards". If kept in the dark and given nothing to eat, they get steadily smaller. They finally end as a ball of cells(细胞)looking rather like the egg from which they came. Under good conditions the ball will turn back to a worm and start growing again. One could probably keep them growing and ungrowing again and again.
This passage is mainly about______.
选项
A、sea animals
B、cells
C、aging
D、anemones
答案
C
解析
主旨大意题。本文主要讲的是一些海洋生物不会变老。A、B、D三项都可排除,故选C。
转载请注明原文地址:https://kaotiyun.com/show/o0AR777K
本试题收录于:
英语(二)题库公共课分类
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英语(二)
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