神经效应器接点
参考答案：
平滑肌、腺体和心肌接受植物性神经支配。植物性神经末梢和它们之间的接点统称为神经效应器接点。
When something is on fire. People throw sand (沙子) on it to put out the fire. The main use of the sand is to
________. [ ]
A. protect the thing on fire.
B. add weight to the thing on fire.
C. keep the air away from the thing on fire.
D. lower the temperature of the thing on fire.
用户在互联网上的名称是______。
A．用户地址
B．网址
C．用户密码
D．注册电子名称
