Question

【题目】It’s vital that every piece of equipment ________ be checked before the experiment.

A. wouldB. couldC. shouldD. might

Answer 1

【答案】C

【解析】

考查情态动词辨析。句意：实验前每一件设备都应该被检查一遍是很重要的。A. would将会；B. could能；C. should应该；D. might可能。根据“be checked before the experiment”可知，每一件设备都应该在实验前被检查一遍，故C项正确。