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【单选题】
药物的安全范围是A.
最小用药量与极量之间的范围
B.
最小有效量与极量之间的范围
C.
极量与最小中毒量之间的范围
D.
极量与致死量之间的范围
E.
有效量与最小中毒量之间的范围
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反馈参考答案：
举一反三
【简答题】biotechnology生物工程学
【简答题】There was a lot of people standing at the door and the small girl couldn't get . [ ] A between B. through C. across D. beyond
【单选题】We can communicate people in every part of the world the Internet．
A.
with; with
B.
with; through
C.
through; through
D.
through; with
【单选题】As an industry, biotechnology stands to ______ electronics in dollar volume and perhaps surpass it in social impact by 2020.
A.
contend
B.
contest
C.
rival
D.
strive
【简答题】环境生物技术(environmental biotechnology，EBT)
【简答题】生物技术(biotechnology or bioengineering)
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