风湿性心脏病二尖瓣狭窄的肺血改变是()
A.肺血正常
B.肺充血
C.肺缺血
D.肺淤血
E.肺水肿
参考答案:D
The woman in red is _____ unusual person. She's a famous pilot. [ ]
A. a
B. an
C. the
D. /
在街角的那幢大楼是史密斯先生居住的公寓。