(2013·重庆，35)—Forgotten something？I can keep an eye on your kids if you want to go and get it.

—________.Thank you all the same.

A．It's very kind of you.

B．Oh，how careless of me!

C．I might as well go and get it.

D．Well，I can do without it.

下图是人体神经调节和体液调节的关系示意图，请回答相关问题

当人处于炎热的环境中时，温觉感受器兴奋，产生的神经冲动沿着①（）传到下丘脑的体温调节中枢，通过该结构的（），再使有关神经兴奋，进而引起（），从而使皮肤的散热量增加。