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

A. wouldB. couldC. shouldD. might

【答案】C

【解析】

考查情態(tài)動詞辨析。句意：實驗前每一件設(shè)備都應(yīng)該被檢查一遍是很重要的。A. would將會；B. could能；C. should應(yīng)該；D. might可能。根據(jù)“be checked before the experiment”可知，每一件設(shè)備都應(yīng)該在實驗前被檢查一遍，故C項正確。

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