单项选择题

If p pencils cost c cents, how many can be bought for d dollars

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单项选择题
In 1996, what percent of fourth-graders did between 1 and 2 hours of homework per day
A． 5%
B． 15%
C．25%
D． 40%
E． 55%
单项选择题
If the lengths of two of the sides of a triangle are 9 and 10, which of the following could be the length of the third side Ⅰ. 1 Ⅱ. 11 Ⅲ. 21
A． None
B． Ⅰ only
C． Ⅱ only
D． Ⅰ and Ⅱ only
E． Ⅰ, Ⅱ, and Ⅲ
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