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【单选题】
能选择性与烟碱结合的受体是A.
α受体
B.
β受体
C.
M受体
D.
N受体
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举一反三
【单选题】passage two 19.
A.
The great number of people engaged in cigarette producing.
B.
The rapid development of cigarette-malting machines.
C.
The rapid development of cigarette-malting factories.
D.
The increasing output of tobacco.
【单选题】Passage Two 19.
A.
Teaching children how to manage their money.
B.
Bargaining with a car dealership.
C.
Arranging doctors' appointments.
D.
Purchasing pets.
【简答题】在分光光度计中，常因波长范围不同而选用不同材料制作的吸收池。可见分光光度法选用______吸收池；紫外分光光度法选用______吸收池；红外分光光度法选用带有______窗片的吸收池。
【单选题】It is strange, but quite common, that man usually the people and things around him, yet shows a keen interest in what is unavailable.
A.
overtakes
B.
overcomes
C.
overhears
D.
overlooks
【简答题】在光度分析中，常因波长范围不同而选用不同材料制作的吸收池。可见分光光度法中选用______吸收池；紫外分光光度法中选用______吸收池；红外分光光度法中选用______吸收池。
【单选题】Passage Two 第19题
A.
People should take in less fat as they can.
B.
It is the reason for peoples obesity.
C.
It is useless for people's health.
D.
It adds a burden to people's heart.
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