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【判断题】
外力对一个系统做的功为零,则该系统的机械能和动量必然同时守恒。A.
正确
B.
错误
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【简答题】Mina: There are_________good restaurants in the centre.Ivan: Yes, but there isn't_________parking. We could go to the Texas Steakhouse near the airport.Mina: Do they serve_________vegetarian dishes?Iv...
【简答题】Choose the correct words or phrases to make a complete sentence.A. (1) The firm is involved in a legal ______________with a rival company.B. (1) The presidential candidate gave a ____________ speech ...
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【简答题】I. Mini-lecture How to Be Fluent Today, we will talk about the ways of being fluent when speaking a second language. I. An important step—thinking in (1)___________________________ — many learner...
【简答题】Would you care for some starter? We have many cold dishes as the starters.
【单选题】It is true that young men should start at the beginning and take the most subordinate positions. Many of the leading businessmen of Pittsburgh had a se rious responsibility forced upon them at the ver...
A.
It is good to start with subordinate places because many businessmen take such positions at the beginning.
B.
It can be a good starting point if we can learn something useful from such experience.
C.
We don’t have such positions nowadays because professional sweepers are hired in offices.
D.
They used to be a serious responsibility in Pittsburgh for young starters in business.
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