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

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