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
22.The_______ flights between the mainland of China and Taiwan will benefit more travelers.
A.famous B. smart C. average D. regular
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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