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    An apple a day may poison children.

    Children who eat an apple or a pear a day may be exceeding（超过）the pesticide（杀虫剂）safety limit because of remains on the fruit, according to research.

    Using data of the British Department of Environment on pesticides on fruit collected from supermarkets，scientists thought that each day some children would get a poisonous level of pesticides.

    The research, published on Sunday, says the government repeatedly claims that the levels of pesticide are safe because, instead of measuring individual apples, researchers buy 10, crush them and take an average reading to see if they are safe. This is the internationally agreed method of checking remains.

    But government figures show that the pesticide is not averagely spread across the batch（一批）, and one or two apples could contain 90% or more of the pesticide in the batch.

    It used mathematical modeling to measure exposure to pesticides for children aged between 18 months and four years old. The pesticides involved can destroy children’s hormones and some are suspected of causing cancer.

    The good news for British fruit growers is that samples（抽样）grown in this country had lower residue level than imported fruit, so buying home-produced fruit will reduce the danger, said Emily Diaman, one of the Earth’s senior food researchers and one of the authors of the report.

    69. The reason why “An apple a day may poison children” is that __________.

    A. there are some harmful insects or worms in the apple

    B. children would get a poisonous level of pesticides because of the remains on the apple

    C. there are always more pesticides on the apples　produced in Britain

    D. the apple is too hard for children to eat

    70. According to the passage, the internationally agreed method of checking remains __________.

    A. tells exactly the pesticide level of each apple

    B. works well only with British fruits

    C. can’t tell whether a specific apple is safe to eat or not

    D. used mathematical modeling to measure exposure to pesticides for children.

    71. The underlined word “residue” can be replaced by  __________.

    A. remains          B. pesticide       C. poison          D. medicine

    72. Which of the following is NOT true？

    A. The remains of the pesticides can do harm to the children’s health.

    B. The remains of the pesticides can do harm to the children’s hormones.

    C. Some remains of the pesticides are suspected of causing cancer.

    D. For safety, we’d better not eat apples from Britain.

     BCAD

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