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【单选题】
An advantage of tradable emissions permits is that:
A.
pollution costs are easier to measure than emissions taxes.
B.
nondegradable pollutants can be more easily controlled than degradable pollutants.
C.
the value that future generations place on pollution damages can be determined.
D.
they provide incentives for firms to develop technologies that are less polluting.
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【单选题】The French pianist has not decided yet which orchestra ______.
A.
is to work with
B.
to work with
C.
should work with
D.
he will work
【简答题】Which company does he work in at present? ________________.
【简答题】Which company does he want to work with?
【简答题】Which company does David Stevenson work for?
【单选题】曲线y=x3在点(1,1)处的切线斜率为( )
A.
0
B.
1
C.
2
D.
3
【简答题】Which department does Simon Winters work in?
【简答题】曲线y=x 3 -4x在点(1,-3)处的切线斜率为______.
【简答题】曲线y=x 3 -1在点(1,0)处的切线斜率为______.
【简答题】In which of the following ways does the handgrip work?
【简答题】Which company does she work for?