【題目】When the sun’s rays hit the earth, a lot of heat ______________ back into space

A.are reflectedB.is reflected

C.reflectsD.were reflected

【答案】B

【解析】

考查動詞時態(tài)語態(tài)及主謂一致。句意:當(dāng)太陽光線照射到地球上時,大量的熱量被反射回太空。句子描述的是客觀事實,應(yīng)使用一般現(xiàn)在時;heat是不可數(shù)名詞,謂語動詞用單數(shù),且與reflect是邏輯被動關(guān)系,應(yīng)使用被動語態(tài)。故選B。

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