【題目】We’ll have a picnic in the Summer Palace this Sunday ________ it rains or it’s very cold.

A. sinceB. ifC. untilD. unless

【答案】D

【解析】

試題分析：考查連詞辨析。句意：這個周日，我們將去公園野炊，除非下雨或天氣非常寒冷。A.自從，由于；B.如果；C.直到；D.除非，如果不。until常與not連用，構(gòu)成not...until...（直到……才……）句型，故選D。

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