问题
选择题
As is well known, the brain performs a very important _______, which controls the nerve system of the body.
A．motion
B．action
C．function
D．fact
答案
答案：C
句意：众所周知，大脑起着重要的作用，它控制着人体的神经系统。A项移动，运动；B项行动，function功能，作用。
H＜0，
S＞0的化学反应一定能自发进行