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    【题目】用括号内所给单词的适当形式填空, 每空格限填一词。

    【1】(2018·山东临沂) Children will be in danger in a swimming pool if their parents don’t take good care of ________. (they)

    【2】(2018·山东临沂) Chinese scientists have successfully cloned (克隆)two _______. They are named Zhong Zhong and Hua Hua. (monkey)

    【3】(2018·山东临沂) The oceans are __________ polluted by plastic waste. (heavy)

    【4】(2018·山东临沂) An American father made pretty dresses for his daughter out of his __________ old shirts. (wife)

    【5】(2018·山东临沂) Every year, about 6.5 million people die because of air ________. (pollute)

    【6】(2018·山东临沂) Jimmy could not sleep at first. He finally fell _______ when the rainstorm stopped at midnight. (sleep)

    【7】(2018·山东临沂) It is very ______ for me to have conversations with friends in English every day. My speaking skills have certainly improved. (help)

    【8】(2018·山东临沂) We should protect the endangered wild animals, or they will _______ in the near future. (appear)

    【答案】

    【1】themselves

    【2】monkeys

    【3】heavily

    【4】wife’s

    【5】pollution

    【6】asleep

    【7】helpful

    【8】disappear

    【解析】

    【1】句意：如果他们的父母不好好照顾他们，游泳池里的孩子就会处于危险之中。take good care of sb.对……妥为照料/照顾好某人；根据句意语境和英文提示，可知填them。

    【2】句意：中国科学家成功地克隆了两只猴子。他们叫中中和华华。two二，后接复数名词；根据句意语境和英文提示，可知填monkeys。

    【3】句意：海洋受到塑料废物的严重污染。pollute污染，动词需用副词修饰；根据句意语境和英文提示，可知填heavily。

    【4】句意：一位美国父亲用妻子的旧衬衫为女儿做了漂亮的衣服。shirts衬衫，名词需用形容词等定语修饰；根据句意语境和英文提示，可知用名词所有格，故填wife’s。

    【5】句意：每年大约有650万人死于空气污染。because of由于，后接名词或动名词；air空气，名词用作形容词，后接名词；根据句意语境和英文提示，可知填pollution。

    【6】句意：一开始吉米睡不着。半夜里暴风雨停了，他终于睡着了。fall asleep睡着；根据句意语境和英文提示，可知填asleep。

    【7】句意：每天和朋友用英语交谈对我很有帮助。我的口语能力有了很大提高。be helpful for sb.有助于……，根据句意语境和英文提示，可知填helpful。

    【8】句意：我们应该保护濒危野生动物，否则它们将在不久的将来消失。or否则，表转折；根据句意语境和英文提示，可知后句是否定意义，故填disappear。

    根据句意语境及英文提示用单词的正确形式填空，主要考查单词形式，包括名词的单复数和所有格、动词的三单形式、非谓语动词、基数词或序数词，主格代词/宾格代词和物主代词（形容词性物主代词/名词性物主代词）等。这类题目难度不大，重点是掌握句意，在理解的基础上把握句子时态，从而判断所给单词的正确形式。

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