2. 自考
  3. 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

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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.  
The underlined word "aging" in the first sentence means______.
选项 A、growing old
B、the age of a person
C、getting younger
D、ungrowing
答案A
解析 词语理解题。由下文可知，本文主要讲的是一些海洋生物不会变老，aging在句中的意思是“变老”。故选A。
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