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【判断题】
血液在动脉中的流动,相对于动脉,血液认为是连续介质A.
正确
B.
错误
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【单选题】When I am away_______ business, I contact my office every day by email.
A.
with
B.
of
C.
on
D.
to
【单选题】The vertical distance between points A and B represents a tax in the market. The per unit burden of the tax on buyers is
A.
P3 - P1.
B.
P3 - P2.
C.
P2 - P1.
D.
P4 - P3.
【单选题】In the following figure, the vertical distance between points A and B represents a tax in the market. The imposition of the tax causes the quantity sold to
A.
increase by 1 unit.
B.
decrease by 1 unit.
C.
increase by 2 units.
D.
decrease by 2 units.
【单选题】The firm demand curve in a competitive market is:
A.
upward sloping.
B.
downward sloping.
C.
horizontal.
D.
vertical.
【简答题】第二节 完形填空（共20小题，每小题1分，满分20分） I am a mother of three，and have recently completed my college degree．The last class I had to 36 was Sociology．The teacher’s last 37 of the term was called“Smile．”The clas...
【单选题】In the following figure, the vertical distance between points A and B represents a tax in the market. The imposition of the tax causes the price paid by buyers to
A.
decrease by $2.
B.
increase by $3.
C.
decrease by $4.
D.
increase by $5.
【简答题】The vertical distance between points A and B represents a tax in the market. The loss in producer surplus caused by the tax is measured by the areaA. ABC. B. P1P3ABC. C. P1P2BC. D. P1C0.
【简答题】完形填空。 Xiao Qiang, a 12-year-old Chinese boy, has too many activities. His father 1 him away from school four afternoons a week and drives him across town to practice. 'I do most of my 2 in the car whe...
【单选题】In the following figure, the vertical distance between points A and B represents a tax in the market. The price that sellers effectively receive after the tax is imposed is
A.
P1.
B.
P2.
C.
P3.
D.
P4.
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