“中银平稳收益理财计划”为（）收益型理财产品，存在本金损失的可能。
A、保本浮动
B、非保本浮动
C、保本非浮动
D、非保本非浮动
参考答案：B
____________ the teachers is about 300 in our school and it is becoming_____________.
A．The number of, more and more
B．The number of, bigger and bigger
C．A number of, more and more
D．A number of, bigger and bigger
二级品石灰石CaO含量指标为（）。
A、40%~45%
B、45%~48%
C、48%~50%
D、45%~50%
