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        1. 【題目】— We’ll visit the Summer Palace__________ there is a heavy rain tomorrow.

          — OK! Boating on the lake must be great fun.

          A. unless B. since

          C. until D. if

          【答案】A

          【解析】

          考查連詞。句意:——如果明天不下大雨,我們就要去參觀頤和園。——好吧,在湖上泛舟肯定很有趣。A. unless除非,如果不;B. since由于,自從……以來;C. until直到……為止;D. if是否,如果。結(jié)合語境可知選A。

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