【題目】Scientists have managed_________ robots walk and dance easily.

A. to make B. making C. makes D. to making

【答案】A

【解析】

試題分析:句意:科學(xué)家已經(jīng)可以很容易的設(shè)法制造出會(huì)走路和會(huì)跳舞的機(jī)器人。Manage to do sth.根據(jù)句意,故選A。

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