风湿性心脏病二尖瓣狭窄最常见的并发症是()
A.肺部感染
B.急性肺水肿
C.血栓栓塞
D.右心衰竭
E.感染性心内膜炎
参考答案:A
At this time next week ______________ the English Channel.
A.I’ll cross
B.I’ll be crossing
C.I’m to cross
D.I’m going to cross
瓷器是中国古代的伟大发明,早在商代就烧出原始瓷器,西汉时期烧制出真正的瓷器。