【題目】Light bulb which was invented by Edison _________now.

A. was widely used B. is widely used

C. will be widely used D. used widely

【答案】B

【解析】句意:愛迪生發(fā)明的燈泡現(xiàn)在被廣泛使用?疾楸粍(dòng)語態(tài)主語Light bulb是動(dòng)詞use的受動(dòng)者,需用被動(dòng)語態(tài),可排除D選項(xiàng)。now現(xiàn)在,用于現(xiàn)在時(shí),可排除AC選項(xiàng)。根據(jù)句意結(jié)構(gòu),可知選B。

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