We are used to the idea of aging in ourselves. We are so used to this that it

游客2024-07-13  8

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 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 un-growing again and again.  [br] The underlined word "aging" in the first sentence means_______.

选项 A、growing old
B、the age of a person
C、getting younger
D、un-growing

答案 A

解析 从文章可以推断aging是指“变老”。因此选A。
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