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    According to the passage, some sea animals . A. will die when they become a ball of cells B. do not grow old C. will die without food D. will stop growing any time they want 【查看更多】

     

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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 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 ungrowing again and again．

    (1)

    Some sea worms grow smaller when they ________．

    [　　]

    A．

    lose weight

    B．

    live in the darkness

    C．

    are under good conditions

    D．

    don’t eat and are kept in the dark

    (2)

    According to the passage, some sea animals ________．

    [　　]

    A．

    will die when they become a ball of cells

    B．

    do not grow old

    C．

    will die without food

    D．

    will stop growing any time they want

    (3)

    The underlined word“aging”in the first sentence probably means ________．

    [　　]

    A．

    growing old

    B．

    the age of a person

    C．

    getting younger

    D．

    ungrowing

    (4)

    This passage is mainly about ________．

    [　　]

    A．

    sea animals

    B．

    cells

    C．

    aging

    D．

    anemones

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    阅读下列短文, 从所给的四个选项中, 选出最佳答案。

        We are used to the idea of aging 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 losing vigor　　 (活力). Some sea worms can even "grow backwards". If starved and kept　　 in the dark, they get smaller. They finally end as a ball of cells,　　 looking rather like the egg from which they come. Under favorable　　 conditions the ball will turn back to a worm and start growing again.　　 One could probably keep them growing and "un-growing" indefinitely.　　 　　

    (1) Some sea worms get smaller when they ___________.　　 　　

    [    ] 　　

    A. lose their breath　　　　

    B. lose weight　　　　

    C. suffer from cold　　　　 　　

    D. suffer from hunger and do not see any light 　　

    (2) According to the passage, some sea animals ___________.　　 　　

    [    ] 　　

    A. are afraid of light　　　　

    B. die when they become a ball of cells 　　

    C. do not grow old　　　　

    D. do not eat food at all

    查看答案和解析>>

    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 un-growing again and again．

    (1)

    Some sea worms grow smaller when they ________．

    [　　]

    A．

    lose weight

    B．

    live in the darkness

    C．

    are under good conditions

    D．

    don’t eat and are kept in the dark

    (2)

    According to the passage, some sea animals ________．

    [　　]

    A．

    will die when they become a ball of cells

    B．

    do not grow old

    C．

    will die without food

    D．

    will stop growing any time they want

    (3)

    According to the passage, which of the following statements in NOT true?

    [　　]

    A．

    We can keep certain kind of sea worm growing and ungrowing again and again．

    B．

    Human beings will grow old and die．

    C．

    An anemone is a king of sea worm that can grow backwards．

    D．

    Some anemones will live nearly a hundred years．

    (4)

    The underlined word aging in the first sentence means ________．

    [　　]

    A．

    growing old

    B．

    the age of a person

    C．

    getting younger

    D．

    un -growing

    (5)

    This passage is mainly about ________．

    [　　]

    A．

    sea animals

    B．

    cells

    C．

    aging

    D．

    anemones

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