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【单选题】
已知某药按一级动力学消除，上午9时测其血药浓度为100μg/l，晚上6血药浓度为12.5μg/l，这种药物的t1/2为A.
2h
B.
3h
C.
4h
D.
5h
E.
9h
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【简答题】What is the relationship between real estate market and economic growth in US in the past and in the near future?
【单选题】Classical growth theory proposes that real GDP growth is ________ and that real GDP per person will ________ the subsistence level.
A.
permanent; temporarily be above
B.
permanent; always be above
C.
temporary; temporarily be above
D.
temporary; be above and below
【单选题】According to neoclassical growth theory, the higher real GDP per person from economic growth will
A.
not last because the population will increase.
B.
last because there is no link between growth and population.
C.
last indefinitely regardless of any other factor.
D.
last as long as technological change continues.
【单选题】Which of the following is a good gauge of economic progress?
A.
the growth rate of real GDP per person, but not the level of real GDP per person
B.
the level of real GDP per person and the growth rate of real GDP per person
C.
neither the level nor the growth rate of real GDP per person
D.
the level of real GDP per person, but not the growth rate of real GDP per person
【单选题】Real GDP ______ over time and the growth rate of real GDP ______.
A.
grows; fluctuates
B.
is steady; is steady
C.
grows; is steady
D.
is steady; fluctuates
【单选题】The growth of real-time bidding may prove disruptive because______.
A.
the real value of real-time bid ads loses transparency
B.
digital information of target audiences falls into advertisers' hands
C.
online ads are charged with higher rates by media firms
D.
the balance between media firms and advertisers is disturbed
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