【題目】The mobile phone has influenced people's life a lot since it ____________.

A.invents
B.invented
C.is invented
D.was invented

【答案】D
【解析】考查動詞時態(tài)和動詞被動語態(tài)；A. invents主動一般現(xiàn)在時態(tài)；B. invented主動過去時態(tài)；C. is invented被動一般現(xiàn)在時態(tài)；D. was invented被動過去時態(tài)；句意：自從手機發(fā)明以來，它極大地影響了人們的生活。根據(jù)句意，故選D。

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