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【题目】The ______ of new inventions(发明) should be to make life easier, not to make it harder.

A. rules B. subjects C. secrets D. purposes

【答案】D

【解析】

试题分析:句意:新发明的目的应是为了使生活更容易,不是使生活更困难。rules规则; subjects主题; secrets秘密;purposes目的。根据to make life easier,not to make it harder可知此处指的是目的,故选D。

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