作业帮A computer____think for itself ; it must be told what to do.（b）A.can’t B.couldn’t C.may not D.might not我觉得A也可以
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A computer____think for itself ; it must be told what to do.（b）A.can’t B.couldn’t C.may not D.might not我觉得A也可以
A computer____think for itself ; it must be told what to do.（b）
A.can’t B.couldn’t C.may not D.might not
我觉得A也可以
A computer____think for itself ; it must be told what to do.（b）A.can’t B.couldn’t C.may not D.might not我觉得A也可以
我也这样认为 AB语法上都讲得通
对中取优 couldn't比can't委婉 一般题中有couldn't都选它,除非题目中有“不可能”（can't have done）之意出现时才用can't
虚拟 非真实条件句
B
这是对过去时候的描写
或者说是书面化
A computer____think for itself .A.mustn't B.needn't C.can't D.isn't
A computer____think for itself ; it must be told what to do.（b）A.can’t B.couldn’t C.may not D.might not我觉得A也可以
A computer____think for itself ; it must be told what to do.A.can’t B.couldn’t C.may not D.might not选B为什么不选A
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