电石的存储、运输要注意什么问题？
参考答案：
电石粉易吸潮生成乙炔，乙炔是可燃气体且易发生爆炸，电石粉需要以惰性气体密封保存和运输。
性温，既能祛风湿，又能解表、止痛的药物是（）
A.防己
B.独活
C.雷公藤
D.豨莶草
E.秦艽
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
A．came up with
B．had raised
C．went through with
D．put up with
