题目内容
7.A computer ____________ think for itself; it must be told what to do.( )A. | can't | B. | couldn't | C. | may not | D. | might not |
分析 电脑是不会自己思考的,它一定是按照指令去做的.
解答 答案:A.
本句中使用can't表达缺乏某种能力,是针对计算机来说的,couldn't是can't的过去式,主要是用来对过去的事情进行说明;may not意为可能不,是语气上比较委婉的一种猜测;might not是may not的过去式,许多时候不表示过去,仅仅是语气上的委婉;故选A
点评 本题考查的是情态动词的使用.在理解词意的基础上,结合语境选出最符合题意的答案.
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