题目内容

A certain prosthodontist specializes in implanting gold and silver teeth in his patients'

A. 31
B. 32
C. 33
D. 34
E. 35

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An engineer designed a ball so that when it was dropped, it rose with each bounce exactly

A. 5
B. 6
C. 7
D. 8
E. 9

How many of the 1,000 people polled responded "none of the above" to the questions？

A. 140
B. 110
C. 80
D. 20
E. 0

The pilot of a small aircraft with a 40-gallon fuel tank wants to fly to Cleveland, which

A. 2
B. 4
C. 12
D. 40
E. 160

由两种完全正相关的股票组成的证券组合不能抵销任何风险。()

A. 正确
B. 错误