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【单选题】
双生牙是由于A.
成釉器过大造成
B.
两个正常牙胚融合而成
C.
单个牙胚未完全分裂形成
D.
两个牙齿牙根发育完成以后发生结合
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反馈参考答案：
举一反三
【简答题】不同的冲压工序卸料装置又有不同的作用:在冲裁工序中,它起卸料和压料的作用;在弯曲工序中,起卸料作用,有时还可以起到局部成型的作用;在拉深工序中起 __ _________ 作用。
【单选题】Do you know when we will have the New Year party?
A.
No problem.
B.
Yes, it is.
C.
In the classroom.
D.
Tomorrow evening.
【单选题】The passage suggests that the author would be most likely to agree with which of the following statements?
A.
Art speaks to the passions as well as to the intellect.
B.
Most works of art express unconscious wishes or desires.
C.
The best art is accessible to the greatest number of people.
D.
The art produced in the last few decades is of inferior quality.
【单选题】Do you know when we will have the new year party?
A.
No problem.
B.
Yes, it is.
C.
In the classroom.
D.
Tomorrow evening.
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