---I think Maths is playing a more important part in the new test system. What about you?

--- ______. We should be more devoted to it.

A．No pains, no gains.

B．Fact speaks louder than words.

C．Great minds think alike.

D．Don’t claim to know what you don’t know.

男，69岁，平素体弱多病。现症见腰酸背痛，小便失禁，畏寒肢冷，下利清谷，舌质淡胖，苔白，脉沉迟。此时辨证属于（）

A.肾阳虚

B.脾阳虚

C.肾阴虚

D.脾气虚

E.肝血虚