Question

【題目】The machines are made ________ at full speed.

A.workB.workingC.to workD.to be worked

Answer 1

【答案】C

【解析】

考查動(dòng)詞不定式。句意：這些機(jī)器是全速運(yùn)轉(zhuǎn)的。make作為使讓動(dòng)詞后面接省略to的不定式結(jié)構(gòu)，make sb. /sth. do…，變?yōu)楸粍?dòng)語態(tài)結(jié)構(gòu)，需要加to，sb./sth. be made to do，本句為被動(dòng)語態(tài)結(jié)構(gòu)，故選C項(xiàng)。