关于左心室的描述正确的是()
A.是最靠心右侧的心腔
B.分为窦部和主动脉前庭
C.主动脉前庭即左心室流入道
D.主动脉前庭即左心室流出道
E.主动脉前庭腔面有肉柱
参考答案:D
--- Shall I phone the hotel for information?
--- There is no need. Sarah said that she would _______ for the weekend.
A.put us through
B.put us up
C.put us out
D.put us down
( )功能是质量检验各项功能的基础。
A.预防
B.“把关”
C.检测
D.鉴别