题目内容
（请给出正确答案）
[主观题]
According to paragraph 2, if you use $100 of your credit and repay it in 20 days, how much
interest will you pay？
A．70 cents.
B．60 cents.
C．80 cents.
D．50 cents.
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BSP滞留百分率在注射后1小时，正常者为（）
A．血查不到染料或极微量
B．滞留率10%～40%
C．滞留率50%～80%
D．滞留率80%～90%
E．滞留率>90%
