患者，男，42岁。一周前腰部扭伤后，突然剧烈腰痛，伴左下肢放射痛。查体：腰部活动受限，左直腿抬高时沿着坐骨神经出现剧烈疼痛，左臀中肌处压痛明显，左小腿后外侧感觉减弱，左拇趾背伸力减弱。X线检查：腰椎右侧凸，骨质增生
有关L4-5椎间盘突出，下列哪一项论述是错误的（）。
A.为L神经根受压
B.疼痛向下放射至大腿和小腿后外侧及足背，包括拇趾
C.拇趾背伸无力
D.膝反射减弱或消失
E.跟腱反射一般无改变
参考答案：D
| 完形填空。 | ||||
| The 2010 Winter Olympic Games will take place in Vancouver and Whistler (惠斯勒) from February 12 to 28. As the world's 1 athletes will compete there, Canada is preparing for it well. It will be broadcasted (播出) in Canada's two 2 languages-English and French. Billions of television viewers worldwide will 3 the opening ceremony of the 2010 Winter Olympic Games. Athletes from more than 80 4 will compete in 86 medal events over 17 days. Then the Paralympics (残奥会) will 5 from March 12 to 21. Canada has 6 millions of dollars preparing. Thousands of spectators will visit the country. Canada will be 7 it all. The building of Olympic gyms began in 2005. Opening and closing ceremonies will be held indoors, at BC Place Stadium. It'll 8 55,000 seats. Some competitions, 9 ski, and bobsled, will take place in Whistler. It's a ski village. During the Games, roads will be closed. More than 15,000 policemen will work to 10 the peace throughout the Games. The United States is the only country to host the Winter Games four times. Team USA hopes 2010 will be a golden year. | ||||
|