— My son is learning English. What dicti

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问题选择题

— My son is learning English. What dictionary shall I buy for him?

— What about this one? It is ____for beginners. [ ]

A. operated

B. operating

C. intending

D. intended

答案

答案：D

单项选择题

直流电磁换向阀与交流电磁换向阀相比不具有（）_特点。

A．工作寿命长

B．允许换向频率较高

C．换向动作平稳

D．价格较低

选择题

We thought of selling this old furniture;but we've decided to_________ it. It might be valuable. [ ]

A. hold on to

B. keep up with

C. turn to

D. look after