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【单选题】
The price elasticity of demand for hamburger is______.A.
the change in the quantity demanded of hamburger when hamburger increases by 30 pence per pound
B.
the percentage increase in the quantity demanded of hamburger when the price of hamburger falls by 1 per cent per pound
C.
the increase in the demand for hamburger when the price of hamburger falls by 10 per cent per pound
D.
the decrease in the quantity demanded of hamburger when the price of hamburger falls by 1 per cent per pound
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【简答题】学习指导P66~67.
【单选题】We finally arrived at a(n)_____that the work must be completed within 3 days.
A.
impression
B.
approach
C.
permission
D.
conclusion
【单选题】We arrived at work in the morning and found that somebody ________ into the office during the night.(2011·江西)
A.
broke
B.
had broken
C.
has broken
D.
was breaking
【单选题】Everybody has arrived.It's time we ______ the work.
A.
shall start
B.
would start
C.
had started
D.
started
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