【題目】I think mobile phone was after the car.
A.invent
B.invented
C.discover
D.discovered

【答案】B
【解析】句意:我認(rèn)為移動(dòng)電話是在汽車之后發(fā)明的。指發(fā)明新東西用invent;而discover是指發(fā)現(xiàn)的對象是原來就有的,只是以前沒有被發(fā)現(xiàn). 故排除C、D。句子用的是一般過去時(shí)的被動(dòng)語態(tài)。動(dòng)詞要用過去分詞,可排除A項(xiàng),故選B。

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