不用笔算,估计下面算式的积比200大的是[ ]
A.25.4×9
B.20.1×9
C.19.9×9
答案:A
I hardly know anyone in the villiage________William and you.
A.besides
B.apart from
C.except for
D.including
在胸骨左缘第3、4肋间触及收缩期震颤,应考虑为()
A.主动脉瓣关闭不全
B.室间隔缺损
C.二尖瓣狭窄
D.三尖瓣狭窄
E.肺动脉瓣狭窄