药品对人体的潜在性的、与药品的剂量和疗程有关的毒害作用称为（）
A.药品的耐受性
B.药物毒性
C.耐药性
D.依赖性
参考答案：B
Many people who saw the film were afraid to swim in the sea when they remembered the scenes
people were eaten by the shark.
A. when
B. on which
C. at which
D. where
2002年3月某人以4.5万元的预付款订购了一套售价为30万元的期房，2003年3月该项目交付使用时，楼价上涨到33.6万元，则其预付款的收益率为（）。
A．12%
B．13.4%
C．80%
D．125%
