—Big animals can be a lot of trouble. Maybe you should get a small pet, like a bird.

—______.

A．That’s all right.

B．That’s a good idea.

C．You’re welcome.

D．Never mind.

“善诊者，察色按脉，先别阴阳。”出自（）。

A.《素问·咳论》

B.《素问·痹论》

C.《素问·阴阳应象大论》

D.《素问·生气通天论》

E.《素问·至真要大论》