下列经粪-口途径传播的肝炎有（）
A.甲型肝炎
B.乙型肝炎
C.丙型肝炎
D.丁型肝炎
E.戊型肝炎
参考答案：A, E
—It often rains in that area. Please take an umbrella with you.
— . [ ]
A. Well, it just depends
B. All right, you are welcome
C. Yes, take it with me
D. OK, just in case
安全绳左右移动距离不得大于（）m。
A、2
B、3
C、5
D、6
