成牙本质细胞突起形成的结构是()
A、釉质生长线
B、釉板
C、釉丛
D、釉梭
E、绞釉
第1题
We are sending you herewith our contract No.9856 in duplicate (一式两份),with the request that you sign and return to us one copy of the contract at your earliest convenience. (翻译)
第2题
第3题
A.sale
B.sales
C.sell
D.selling
第4题
A、your sending
B、you send
C、sending
D、our sending
第5题
We have duly received your Sales Contract No. 5630(9)50 tons walnutmeat we have booked with you.(10)please find the duplicate with our counter-signature.
第6题
A、on
B、of
C、in
D、at
第7题
第8题
A、models/the same
B、designs/separate
C、styles/another
D、makes/other
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