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【单选题】
What is the author's idea towards Christmas celebrations?
A.
Chinese young people should not celebrate Christmas seasons.
B.
Young people should show their interest in Christmas celebrations.
C.
Christmas is a good season for business people to earn money in China.
D.
Different people have different views towards the western style. celebration.
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参考答案：
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me a nice present on my next birthday. will gives
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will give
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gives
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浮头式
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固定管板式
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one
B.
it
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something
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【单选题】一个周转轮系至少包含有( )个行星轮。
A.
1
B.
2
C.
3
D.
4
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【单选题】换热器折流板间距最小为( )mm
A.
20
B.
50
C.
80
D.
100
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【简答题】Mother gave me a promise_____I made progress in my English she would take me to travel . A  that;    B that if    C  that whether ;   D whether
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【多选题】开口毛细管色谱柱在使用一段时间后出现柱效下降(分离能力降低、色谱峰扩张变形),可能的原因是( )。
A.
色谱柱进样端固定液流失
B.
色谱柱内固定液分布不均匀
C.
色谱柱内固定液性能改变
D.
流失的固定液污染了检测器
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【单选题】— _____ Does this bus go to the Olympic Park? — Yes, I think so. [     ]
A.
Excuse me.
B.
Hello!
C.
Pardon me?
D.
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A.
色谱柱进样端固定液流失
B.
色谱柱内固定液分布不均匀
C.
色谱柱内固定液性能改变
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流失的固定液污染了检测器
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