米粉面团按其属性一般可分为（）。
A.糕类粉团
B.油类粉团
C.团类粉团
D.发酵粉团
E.蛋类粉团
参考答案：A, C, D
The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.
A．to planting
B．to plant
C．plant
D．planting
紫外线的杀菌机制是什么？
