风湿性心脏病二尖瓣狭窄最重要的体征是()
A.周围血管征如水冲脉
B.心房颤动
C.心尖区舒张期隆隆样杂音
D.肺动脉瓣区第二心音亢进
E.心尖区第一心音增强
参考答案:C
2.753精确到十分位是( ),精确到百分位是( )。
– Thank you for your birthday gift. In fact, you couldn’t have chosen _________ for me.
– I’m glad you like it.
A.a good one
B.a better one
C.a best one
D.the best one