【題目】—When was first robot ? —In 1959.

A. a; invent B. the; invent C. a; invented D. the; invented

【答案】D

【解析】句意:-第一個機器人是什么時候發(fā)明的?-1959年。a是定冠詞,表示泛指一個,修飾可數(shù)名詞單數(shù);the是定冠詞,修飾名詞,表示特指;invent發(fā)明,是動詞原形;invented是過去分詞形式。first是序數(shù)詞,它的前面必須加定冠詞the;根據(jù)句意可知,機器人是被發(fā)明的,這里用被動語態(tài),用be+過去分詞,故第二個空填過去分詞形式,選D。

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