David had prepared carefully for the chemistry exam, as he wanted to be sure of passing it at the first _____.
A.experimentB.intention C.a(chǎn)imD.a(chǎn)ttempt
D

試題分析:句意:大衛(wèi)曾為化學的考試,認真地準備,因為他想確定第一次嘗試就能通過考試。experiment 實驗;intention意向,意圖,目的;打算;aim 目標;attempt嘗試,努力。故選D。
考點: 考查名詞詞義辨析的用法。
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