所管理物业含有电梯、游泳池、广告等风险之一的,每一风险因素在物业管理责任保险基本保险费率的基础上加收()
A、10%
B、5%
C、3%
D、8%
参考答案:B
There will be ______ trees on the mountain in a few years. [ ]
A. three hundred of
B. three hundreds
C. hundreds of
D. hundred of