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According to          World Health Organization ,health care plans are needed in all big cities to prevent          spread of AIDS.

       A.the ;不填                                       B.the; the

       C.a; a                                               D.不填;the

A. 

解析:冠詞。一般地,定冠詞表示獨指和特指,含有普通名詞的專有名詞前用定冠詞。第二空特指“愛滋病的傳播”。

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         C.To isolate someone from friends.  D.To refuse to help someone in need.

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2. The last sentence of this article means ________.

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3. After we read the article we can certainly know that _______.

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