The reason some children are backward in speaking is most probably that _______.A.they are

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The reason some children are backward in speaking is most probably that _______.

A.they are incapable of learning language rapidly

B.they are exposed to too much language of once

C.their mothers respond inadequately to their attempts to speak

D.their mothers are not intelligent enough to help them

热搜:在图示摆动导杆机构中,∠BAC=90°,LAB=60mm,LAC=120mm,曲