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【单选题】
齿轮联轴节的内外齿齿面做成( ),允许有较大的径向位移和角位移。A.
弧形
B.
梯形
C.
D.
人字型
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【简答题】三、阅读理解（30分） On New Year’s Eve At midnight on New Year’s Eve, people in Rome, Italy, throw out all the things they no longer want. The streets are filled with old chairs, beds, clothes and dishes. In M...
【单选题】On New Year's Eve, there will be a firework _____ at People's Square.
A.
display
B.
performance
C.
show
D.
exhibition
【单选题】On New Year's Eve, there will be a firework ______ at People's Square.
A.
performance
B.
display
C.
show
D.
exhibition
【单选题】. There is a tradition of having a family dinner at home on lunar New Year’s Eve. _____, however, the custom has changed.
A.
Late
B.
Later
C.
Lately
D.
Latter
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