A．replyB．sillyC．lonelyD．calmly
A. reply
B. silly
C. lonely
D. calmly
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A．whistleB．whichC．wheatD．whole
A. whistle
B. which
C. wheat
D. whole
Why did the paper industry need a new source of fiber in the early 180Os？
A. Publishers wanted higher quality paper.
B. Paper made from rags deteriorated too quickly.
C. Wood pulp had become too expensive.
D. The supply of rags was insufficient.
A．metreB．messageC．memoryD．medal
A. metre
B. message
C. memory
D. medal
在资产配置过程中,确定有效资产组合的边界的目的是找出最小方差组合。()
A. 正确
B. 错误
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