选择题：Not only _____ about the food, but he also refused

题目内容：

Not only _____ about the food, but he also refused to pay for it.

A.he complained
B.did he complain
C.he had complained
D.he did complain

参考答案：

31. (判断题) 齿轮泵多用于高压系统,柱塞泵多用于中压系统,叶片泵多用于低压系统。( )(本题2

31. (判断题) 齿轮泵多用于高压系统,柱塞泵多用于中压系统,叶片泵多用于低压系统。( )(本题2.0分)A. 对B. 错

4. 以建立和发展某门学科的理论体系为目的的研究称为( )(本题2.0分)A. 应用研究B. 基础研究C. 开发研究D. 定量研究

Only then did he ________ the situation he and his fellow soldiers were in. A.aw

设f.(x)存在，则下列等式成立的有（）A.lim(△x→ 0)[f(x0-△x)-f(x0)]/△x=f.(x0)B.lim(△x→ 0)[f(x0-△x)-

We decided not to climb the mountains because it was raining _______. A.hardlyB.