摘要: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. 例: We last night, but we went to the concert instead. A. must have studied B. might study C. should have studied D. would study 答案是C.21. I don’t think the experiment is failure. At least we have gained experience for future success. A.不填,the B. a; the C. a ; 不填 D.不填; 不填

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