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【单选题】
下列药物不属于大环内酯类的是A.
大观霉素
B.
克拉霉素
C.
阿奇霉素
D.
红霉素
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皮皮学刷刷变学霸
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【简答题】Work in pairs. Search in the library or on the Internet for the information about the brand of the car you want. Make your choice of the brand of the car you would like to buy. Tell your partner which...
【单选题】The car was made in 1800; it is now regarded as an antique .
A.
a product
B.
a relic
C.
a layman
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A.
homemade
B.
old
C.
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D.
gorge
【简答题】DNA多态性就是限制性片段长度多态性。
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