Li Ming is _________ at the desk now.[ ]
A. siting
B. sited
C. sitted
D. sitting
答案:D
The husband rushed to the hospital ____he heard that his wife was injured .
A.at the moment
B.for the moment
C.in a moment
D.the moment
房室传导短路()
A.Marfan综合征
B.Williams综合征
C.Bland-WhiteGarland综合征
D.Wolff-Parkinson-White综合征
E.Lutembacher综合征