【題目】The ______ of new inventions(發(fā)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】句意:新發(fā)明的目的應(yīng)該是使生活更容易,而不是使它更困難。A. rules 規(guī)則;B. subjects主題;C. secrets機(jī)密;D. purposes目的。結(jié)合句意可知,答案為D。

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