普郎尼克F-68属哪种表面活性剂()
A．阳离子型
B．阴离子
C．两性离子型
D．非离子型
E．离子型
参考答案：D
—Look! There is a big bag _______ the road.
—You're right. It's too dangerous. Let's move it away. [ ]
A. taking up
B. taking away
C. taking off
D. taking out
