三尖瓣狭窄的临床表现,由心排血量低引起()
A.肺栓塞
B.房颤
C.腹胀
D.疲乏
E.呼吸困难
参考答案:D
.The detective, ______to read a newspaper, glanced at the man ______next to a woman.
A.pretending ; seating
B.pretending; seated
C.pretended ; seating
D.pretended ; seated
参加谈判前,应认真修饰个人仪表,尤其要选择端庄、雅致的发型,一般不宜染彩发。男士应(),女士应()。