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【判断题】
雷诺数是反映流体流动状态的准则数,它反映了流体流动时间的惯性力与粘性力的对比关系A.
正确
B.
错误
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举一反三
【简答题】I wonder how he _______ that to the teacher. A．dare to say B．dare saying C．not dare say D．dared say
【单选题】I wondered how he________that to the teacher. [ ]
A.
dare to say
B.
dare saying
C.
not dare say
D.
dared say
【单选题】I ______ say he ______ speak to her in public at that time, for he was such a shy boy.
A.
dare; dares
B.
dare; didn’t dare to
C.
dared; dared
D.
dared; dared not to
【简答题】从方框中选择恰当的词或短语并用其正确的形式填空。 be absent ; try one’s best ; excite ; provide … with ; deal with ; rob …of ; pay attention to ; from time to time ; get off ; polite 小题1:The audience clapped and shoute...
【单选题】He ______ say what he thought.
A.
dares not
B.
hasn’t dared
C.
dare not to
D.
didn’t dare to
【单选题】—Does he work hard at his lessons? —Yes, he __ no efforts, I dare say.
A.
spends
B.
shares
C.
spares
D.
wastes
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