摘要:第一节 单项填空 ( 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. - We could invite Barbara to the barbeque this Saturday. - Yes, A. that's all right. B. why not? C. I wonder. D. why? 22. With growth of the Internet, computer security has become major concern for businesses and governments. A. the; a B. the; the C. 不填; the D. the; 不填

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