颅脑手术后应特别注意观察
A．低渗性脱水B．高渗性缺水C．等渗性缺水D．高血钾E．低血钾
参考答案：C
____ is this dress?[ ]
A. How old
B. How many
C. How much
Regulations _____ that students attend at least 90% of the lectures.
A．demand
B．ask
C．require
D．request
