用甘露醇治疗脑水肿应该（）
A.缓慢滴注
B.快速推注
C.一次剂量应在30min内滴完
D.一次剂量应在2h内滴完
E.速度快慢不影响疗效
参考答案：C
一个数的整数部分是a，小数部分是b，则其相反数的整数部分是______，小数部分是______．
---Where did you get to know her?
---It was on the farm we both once worked in the 1970s.
A．that
B．which
C．when
D．where
