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【单选题】
The penguins are interesting. [ ]A.
kinds
B.
kind.
C.
kinds of
D.
kind of
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举一反三
【单选题】If the price elasticity of demand for a good is 4.0, then a 10 percent increase in price results in a
A.
0.4 percent decrease in the quantity demanded.
B.
2.5 percent decrease in the quantity demanded.
C.
4 percent decrease in the quantity demanded.
D.
40 percent decrease in the quantity demanded.
【单选题】If the elasticity of demand for a good is greater than the government expected:
A.
Consumers will bear more of the burden of the tax than the government expected.
B.
Producers will bear more of the burden of the tax than the government expected.
C.
The tax will raise less revenue than the government expected.
D.
Both b. and c. are true.
【简答题】压力调节容量控制通气的英文缩写是（）。|呼气末正压通气的英文缩写是（）。A. PEEPB. ASVC. CPAPD. PRVCVE. APV
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