青年男性，右大腿刀砍伤1小时入院，患者烦躁不安。体检：心率110次/分，唇发绀，血压90/60mmHg(12/8kPa)，右足发凉，足背动脉消失，股骨下段可见骨折端突出于皮肤，可能的诊断是
A．右股骨下段骨折伴休克
B．右股骨下段开放性骨折
C．右股骨下段开放性损伤伴股动脉损伤
D．右股骨下段开放性骨折伴坐骨神经损伤
E．右股骨下段开放性骨折伴休克
参考答案：E
Some people have the ideas that nothing can be done about their poor reading ability．They feel hopeless about it．Can you learn to read better, or must you agree that nothing can be done about it? To be sure, people’s abilities are different．You cannot expect to do everything as well as certain other people do．If all the students in a class tried out for basketball, some would be very good players; others would be very poor; and many would be in between．But even the very poor players can become much better players if they are guided in the right way, and with plenty of practice．It is the same with reading．Some seem to enjoy reading and to read well without any special help．Others find reading a slow and tiring job．In between, there  are all degrees of reading ability．Many experiments have shown that just about every poor reader can improve his reading ability．Firstly, the poor readers were given tests of reading ability．Secondly, some of the causes of their poor reading were discovered, and then they were given special instruction and practice in reading．After a few months, another test of the same kind was given．In nearly all cases, these people had raised their reading scores．
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