— Some of my classmates don’t like math because they think it’s boring.

— I don’t like it, _____. I think it’s too difficult.

A．too

B．either

C．also

D．neither

以下药物选择的含量测定方法为：阿司匹林（）.

A．中和滴定法 

B．硫酸铈滴定法 

C．非水溶液滴定法 

D．络合滴定法 

E．高锰酸钾滴定法