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

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

【答案】D

【解析】

试题分析:句意:新发明的目的应该使生活更好,不是更艰苦 A. Secrets秘密;B. Rules规则;C. Subjects科目;D. Purposes目的。根据题意,故选D。

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