He cannot answer this question at once,but can find the answer to it from tha...

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问题 He cannot answer this question at once,but can find the answer to it from that book.

选项 A:soon       
B:immediately
C:now       
D:early

答案B

解析at once“马上”,immediately“马上”,例如:It's getting late.We must go back home immediately.越来越晚了,我们得马上回家。soon“很快”,例如:We'll have lunch soon.我们很快就要吃中午饭了。now“现在”,例如:If we leave now we'll be there before dark.如果我们现在就离开,在天黑前就到那里了。early“早”,例如:Mary gets up very early.玛丽起得很早。
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