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It is said that the software on learning subjects for pupils       in a very practical way.

A.designed B.designing C.are designed D.is designed

D

解析试题分析: 本句的主语是the software是一个单数名词,再根据前面的is说明本句使用一般现在时。句意:据说关于学生学习的软件是用一种特殊的方法被设计出来的。根据句意说明使用被动语态的形式。故D正确,
考点: 考察时态和主谓一致

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