Clothing made of man-made fibers has certain advantages over______made of natural fibers like cotton, wool or silk.
A. one
B. that
C. which
D. what
Cars play an important role in modern life, but they______also cause many problems like air pollution.
A. can
B. should
C. would
D. need
预期投资若超过预期储蓄，那么()。
A. 总供给将大于总需求
B. 在未充分就业情况下将增加就业
C. 将产生通货膨胀缺口
D. 经济将处于非预期状态
在宋代下列地区设立了市舶司的是()
A. 广州、福州、厦门、泉州
B. 广州、杭州、明州、福州
C. 广州、明州、杭州、泉州
D. 明州、泉州、福州、厦门
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