左心功能不全时常见( )。
A．胸水 B．肝脾肿大 C．下肢水肿D．腹水 E．呼吸困难
参考答案：E
解析： 慢性心力衰竭的病因、诱发因素和临床表现
设点P（x，y）在第二象限，且|x|=1，|y|=2，则P点的坐标为______．
When someone says to you, “How beautifully you sing!” You should reply,
“ .”
A．That's not true
B．Thank you
C．Not at all
D．You're welcome
