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.1. - Why was Professor Johnson unhappy those days? - Can’t you see it clearly? The only reason was that the theory he stuck to wrong. A. proving B. being proved C. proved D. was proved

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