若某地旅游收入的编辑储蓄倾向为40%，则该地的旅游乘数为______。
A．2
B．2.5
C．4
D．5
参考答案：B
请用所给单词的适当形式填空。
1. Look! These _____________ (child) are playing football.
2. May often _____________ (watch) TV on Sunday.
3. Xiao Ming is _____________ (have) breakfast now.
4. She likes _____________ (swim).
5. He can _____________ (draw) a picture.
含哪类成分的药物在加水处理时宜"抢水洗"（）
A.生物碱
B.苷
C.挥发油
D.有机酸
E.鞣质
