A:Do you know         for advice when we have problems.

B:You can talk to your parents or teachers.

A．who to talk

B．when to talk to

C．who to talk to

D．who can we talk to

辨别寒热真假时，真象常反映在

A．皮肤

B．四肢

C．舌、脉

D．面色

E．以上均非