肺血栓栓塞一般不会出现()
A.右心衰竭
B.胸痛
C.心源性哮喘
D.呼吸困难
E.咯血
参考答案:C
我国是一个统一的多民族国家,共有民族[ ]
A.55个
B.56个
C.57个
D.58个
He is used to sleeping with the window ______
A.close
B.closing
C.to close
D.closed