【題目】— The world has been changing fast after the ________ of the computer and the smartphone.

— I can't agree more.

A.discoveryB.inventionC.creationD.research

【答案】B

【解析】

句意：——自從電腦和智能手機被發(fā)明后，世界一直在快速地變化。——我完全同意。

本題考查名詞。discovery發(fā)現(xiàn)，invention發(fā)明，creation創(chuàng)作，research研究。根據(jù)the computer and the smartphone可知，此處指的是電腦和智能手機的發(fā)明。故選B。

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