“弟”的第五笔是_______。
参考答案:竖折折钩
I'm sorry you've been waiting so long,but it'll still be some time ________ Brian gets back.
A.before
B.since
C.till
D.after
内科治疗脑出血时,最重要的是()。
A.气管切开,吸氧
B.降低血压
C.注意水电解质平衡
D.控制出血
E.控制脑水肿,预防脑疝