在一般情况下，将会增加泡沫稳定性的有（）。
A、PH值高
B、可溶性盐含量高
C、矿浆浓度高
D、矿泥含量高
参考答案：A, B, D
—I think we should save the endangered animals.
— I agree _ you. There are not many of them. [ ]
A. to
B. with
C. about
