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A．The populations of small towns increased rapidly.B．Art critics in cites began to tak

A. The populations of small towns increased rapidly.
B. Art critics in cites began to take notice of regionalism.
C. Some regionalist painters began a new art movement.
D. Society became more internationally focused.

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A，B两种证券的相关系数为0.4,预期报酬率分别为12%和16%,标准差分别为20%和30%,在投资组合中A，B两种证券的投资比例分别为60%和40%,则A，B两种证券构成的投资组合的预期报酬率和标准差分别为()。

A. 13.6%和20%
B. 13.6%和24%
C. 14.4%和30%
D. 14.6%和25%

听力原文： A deadly infectious outbreak swept through a small city in Zaire, Africa last spring, killing more than one hundred people. The killer was a rare virus that caused most victims to bleed to death. As scientists rushed to control the outbreak, people in the U.S. wondered "Could it attack here？" "We are foolish if we think it couldn't come to our country," say doctors. The virus can be highly infectious. If you come in contact with a victim's blood or other body fluids, you can get sick too. It only takes one infected person to start such a disease. That's what scientists believe happened in Zaire. The healthcare workers who treated the first victims there soon fell ill too. The problem was they had no protective equipment to prevent themselves from being infected. International rescue workers brought equipment to prevent themselves from being infected soon after the outbreak occurred. Now the disease appears to be under control. One big mystery is that no one knows where the virus comes from or where it will strike next. Some scientists say that the virus lies inactive in the cells of some kind of plant, insect or other animal. Then it somehow finds a way to infect humans. Scientists are now headed into the jungles of Africa to find out where the virus lives. Once they find the virus, they also hope to find ways to combat it.
(30)

A. Through food.
B. Through air.
C. Through insects.
D. Through body fluids.

某银行2000年6月23日发放给某化工厂短期贷款100万元,期限为9个月,假定利率为6‰,该支行2000年9月20日应结利息为()。

A. 18000元
B. 36000元
C. 54000元
D. 6000元

若在窗体模块的声明部分声明了如下自定义类型和数组
Private Type rec
Code As Integer
Caption As String
End Type
Dim art(5)As rec
则下面的输出语句中正确的是

A. Print arr．Code(2)，an．Caption(2)
B. Print arr．Code，arr．Caption
C. Print arr(2)．Code，arr(2)．Caption
D. Print Code(2)，Caption(2)