－I____it as must of a student that he should say hello to his teachers first whenever they meet.

－I can’t agree more.

A．take

B．look

C．think

D．make

证见经间期出血，量少色红，腰酸头晕，便坚尿黄，舌红，脉细略数，治以（）

A.清热凉血

B.滋阴清热

C.滋阴止血

D.凉血止血

E.滋阴养血