56. 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

　　57. 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.

　　58. The underlined word “residue” can be replaced by

　　__________.

　　A. remains

　　B. pesticide

　　C. poison

　　D. medicine

　　59. 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.

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