下列哪项可以出现在椎体外系统病变时
A．慌张步态
B．假面具脸
C．静止性震颤
D．折刀样肌张力增高
E．运动减少而缓慢
参考答案：A,B,C,E
Most people find that it will never be possible to give _____, long-term predictions of when and
where serious quakes will strike.[ ]
A. accurate
B. correct
C. exactly
D. typical
滴加1%钒酸铵硫酸溶液1滴，马钱子胚乳显( )
A．红色B．黄色C．蓝色D．紫色E．蓝绿色
