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单选题
27.By the time the course ends, a lot about the American way of life.
A
A. we have learned
B
B.we511 learn
C
C. we are learning
D
D. we , 11 havelearned
答案解析
正确答案：D
解析：
27.【翻译】到课程结束的时候，我们将已学到很多关于美国生活方式的知识。【精析】D根据句意和时间状语从句By the time the course ends可知，从句使用了一般现在时表将来,主句应用将来 完成时，即主句谓语动词用“will/shall have+过去分词”的形式，表示到将来某动作发生之前已经完成的动作，故选I）
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