下列哪项不是上运动神经元瘫痪的特点（）
A.肌张力增高
B.腱反射亢进
C.病理征阳性
D.无肌萎缩
E.以肌群瘫痪为主
参考答案：E
在实践中常用来检出随机误差的是（）
A.12s
B.12.5
C.41s
D.13s
E.11s
— It's 9 o'clock. I'm afraid I have to leave, ______ I'll be late for the plane.
— Have a nice trip. [ ]
A. or
B. so
C. and
D. but
