以上突发突止,又易复发的是()
A.心房扑动
B.房颤
C.阵发性室上性心动过速
D.阵发性室性心动过速
E.窦性心动过缓
参考答案:C
This naughty boy is really________, which makes his mother upset.[ ]
A. attractive
B. active
C. troublesome
D. anxious
菌落(colony)