---Do you have anything in mind _____ you’d like for supper?

---Well, _____ is okay with me.

A．that…anything

B．which…everything

C．what…nothing

D．whether…something

外源性刺激来自：（）。

A.脑垂体

B.内环境（血浆、组织液、淋巴）

C.外部环境

D.神经与内分泌系统