第27题: [单项选择]—I knocked over my coffee cup. It went right over ______ keyboard. —You shouldn’t put drinks near ______ computer. A. the;/ B. the; a C. a; / D. a; a 参考答案:B 答案解析:[考点] 冠词的用法 [解析] keyboard表示特指,特指双方心目中的那个键盘,所以要用定冠词the。computer表示泛指,所以要用不定冠词a。