无眩晕、无听力障碍和肌力完好的患者，出现右上肢指鼻试验不正确和轮替动作差、右下肢跟膝胫试验差。病损部位在（）
A.小脑蚓部
B.右侧小脑半球
C.左侧小脑半球
D.左侧脑桥前庭神经核
E.右侧脑桥前庭神经核
参考答案：B
解析：
小脑半球病变会出现同侧的只提醒共济失调，损害时抬腿触膝时出现辨距不良（即指鼻试验不正确）和意向性震颤，下移时摇晃不稳；感觉性共济失调闭眼时足跟难寻到膝盖，故选B。
| 阅读下面短文。根据短文内容从每题所给的四个选项中选择最佳选项。 |
| Mr. Brown lived in a house less than two miles from his office, so he was able to drive home every day for lunch. Every time he drove home at noon, he found many cars were parked outside his house and there was no room for his own car. He had to drive somewhere else to park his car. Then he had to walk back home. This made him very angry. He had put up a board, which said, "No parking in the garden facing the road,"but nobody noticed it. People seemed to obey (遵守) only a police notice with white letters on a blue board:  Mrs. Brown suggested (建议)that he should steal a police notice. He was afraid to do so. She then suggested that he should make one just like a police notice. He said he was not the police and couldn't use the word "police". Several days later, Mr. Brown made a blue board with white letters:  "Oh,"Mrs. Brown said, "You told me you weren't going to use the word "police", but why do you use it now?" "Really?"he asked, looked at it again. She started to laugh, "You are really clever." |
| 1. Mr. Brown's office was ___________ his house. |
[ ] |
| A. next to B. not so far from C. 2 hours' drive from D. 5 miles from |
| 2. Mr. Brown made _____________ notice board (s) altogether. |
[ ] |
| A. one B. two C. three D. no |
| 3. Mr. Brown made a notice board which ___________ in the end. |
[ ] |
| A. was just the same as a police notice B. was different in colour from a police notice C. just looked like a police notice D. said "POLICE NOTICE, NO PARKING" |
| 4. We can infer（推断）that __________ after he put up the blue board. |
[ ] |
| A. more people will park their cars outside his house B. more policemen will come to park their cars at noon C. fewer people will park their cars outside his house D. fewer people will visit him at noon later on |