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23.It’s required that some activities _________to celebrate the 30th anniversary of the reform and opening up.

A.should hold    B.are held        C.be held      D.will be held

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22.The_______ flights between the mainland of China and Taiwan will benefit more travelers.

A.famous         B. smart           C. average         D. regular

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第一节:语法和词汇知识(共15小题,每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21.Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited.

A.the; the          B.不填; 不填       C.不填; the          D.a; the   

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