颈内动脉系统TIA特征性症状（）
A.短暂性全面性遗忘症
B.跌倒发作
C.眼动脉交叉瘫
D.眩晕
E.Horner征交叉瘫
参考答案：C, E
你能找出下列句中的错误吗？选出来并改一改。
( ) 1. What the matter with you? ________________
A B C D
( ) 2. I'm two years old than you. ________________
( ) 3. Me nose hurts. ________________
A B C
( ) 4. I see a mouse yesterday. ________________
( ) 5. It's tail is longer. ________________
计算（3a﹣b）（﹣3a﹣b）等于[ ]
A．9a2﹣6ab﹣b2
B．﹣9a2﹣6ab﹣b2
C．b2﹣9a2
D．9a2﹣b2
