【題目】The _______ of new inventions (發(fā)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】

試題分析:句意:新發(fā)明的目的應(yīng)該使生活更好,不是更艱苦。 A. Secrets秘密;B. Rules規(guī)則;C. Subjects科目;D. Purposes目的。根據(jù)題意,故選D。

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