震颤麻痹发病的主要原因是由于纹状体：（）
A.CO中毒
B.吩噻嗪类药物中毒
C.脑动脉硬化
D.多巴胺减少
E.锰中毒
参考答案：D
( )是综合平均的基本方法，用于对采用量纲的指标的评价结果进行综合。
A．综合平均法
B．综合分析法
C．加权平均法
D．层次分析法
It was not ________ the many blows he received ________ the lack of fighting spirit________ led to his losing the game.
A．so; for; which
B．so much; as; that
C．like; for; that
D．as; as; which
