脑内绝大多数去甲肾上腺素能神经元位于
A．脑桥蓝斑B．中脑黑质C．低位脑干D．纹状体E．脑干中缝核
参考答案：C
蛋白质：①构成（）、②分解放能，它不能贮存物质
The boss exploded with anger and asked him to leave in no time; ,he was fired
A．on the contrary
B．on the whole
C．in other words
D．in return
