考虑将某种药物用于临床，其治疗增益系数（TGF）应（）。
A.<0
B.>0
C.<1
D.=1
E.>1
参考答案：E
You must keep in mind whom you _______ in this class, because we all voted for you in the elections of
class president. [ ]
A. tolerate
B. inspire
C. arrange
D. represent
修复体粘固时最常用的消毒剂是（）
A.75%酒精
B.2%碘酊
C.1%碘氟
D.0.5%双氧水
E.2%高锰酸钾
