Our physics teacher told us that light ________ faster than sound.A.travelB.trav
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Our physics teacher told us that light ________ faster than sound.A.travel | B.travels | C.is travelling | D.has travelled |
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答案
B |
解析
试题分析:根据题***结构,可知本句是一个宾语从句。根据宾语从句中如果从句是客观事实,不论主句是什么时态,从句都用一般现在时的用法, 本句中“光的速度比声音的速度快”是客观事实。故本题应该选B。 点评:实际上本题考查的是宾语从句的时态问题。宾语从句中的时态往往会受到主句时态的影响,但本题中考查的是特例,也就是如果从句是有关客观事实,则从句就用一般现在时。 |
举一反三
I’m hungry. I_____ breakfast yet.A.didn’t have | B.had | C.haven’t had | D.haven’t have |
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Mary _____ by the lake when a black cat ran past her.A.sat | B.has sat | C.was sitting | D.sits |
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There ________ elephants if we don’t protect them now.A.will have no | B.won’t be any | C.won’t be some | D.will be some |
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-All of us _______ sometimes. -You had better have a good rest when you are free. A.gets tired | B.get tired | C.getting tired | D.is tired |
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—Where is Mike? —He’s _______ the pool.A.swim at | B.is swimming at | C.swimming at | D.swim |
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