问答题

Suppose that two recent studies conclude that increased fiber in the diet does not reduce the risk of developing colon cancer as was previously thought. The likely result will be that the:

答案： A.price of high-fiber foods will rise.
B.supply of high-...

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单项选择题

构建“丝绸之路经济带”要创新合作模式，加强“五通”，即政策沟通、设施联通、贸易畅通、资金融通和（）。 A.
和平相通 B.
友谊相通 C.
情谊相通 D.
民心相通

Assume consumers eat either rice or pasta for dinner every night. If the price of rice increases, in the pasta market one would expect to see:

答案： A.a decrease in the quantity of pasta demanded.
B.an inc...