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        1. Edison who invented light had _________ knowledge of science.
          A.a(chǎn); \B.a(chǎn); aC.the; \D.the; a
          D
          考查冠詞。第一空應(yīng)在invented的后面,發(fā)明物的前面必須加the,第二空為固定短語:have a knowledge of 精通,句意:發(fā)明電燈的愛迪生精通科學(xué)。所以選D。
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