问答题

β受体阻断药的主要临床应用。

答案：（1）心律失常；
（2）心绞痛和心肌梗死；
（3）高血压，能使高血压病人的血压下降，伴有心率减慢；<...

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单项选择题

______ tells a simple but very moving story in which four people living in a Puritan community are involved in and affected by the sin of adultery in different ways.
A、Twice-Told Tales
B、The Scarlet Letter
C、The House of the Seven Gables
D、The Marble Faun

不定项选择

A Story of the Washing Girl was created by Wei Liangfu

A．正确
B．错误