患者男，27岁，因“感冒后双下肢无力、麻木3个月，排尿困难1周”来诊。查体：右下肢肌力Ⅲ级，左下肢肌力Ⅳ级，肌张力低，双侧巴宾斯基征（＋），T10以下针刺觉减退，双髋以下音叉震动觉减退。腰椎穿刺脑脊液检查：压力110mmHO，细胞数0，蛋白350mg/L，糖3.6mmol/L，氯化物123mmol/L，奎肯试验。
其病变部位可能是（提示蛛网膜下腔通畅。）（）
A.颈髓髓内
B.颈髓髓外
C.胸髓髓内
D.胸髓髓外
E.延髓
F.腰髓
参考答案：C
完形填空（本题有15小题，每小题1分，共15分） 阅读下面短文，掌握大意，然后从每题所给的 A、B、C、D 四个选项中选出最佳选项。  “I can’t believe what I’m hearing!” I thought to myself. Jeff was the last candidate* for president of Student Union. I really thought I should be chosen. Later that day, I happened to pass Jeff in the dining room. I offered 1 a polite “Congratulations” and walked to my usual table. To my 2 , Jeff came to me and put his plate beside mine. “I’m, er – I’m just wondering if you would consider coming to work on my team,” he said nervously. “You are really 3 and you would be a great partner.” “I don't think so,” I replied, feeling unsure. “Well, 4 you change your mind, you can tell me tomorrow.” he said before moving to another table. All that night, I thought about the 5 from Jeff. Maybe being a part of the election* process would give me a chance to make important changes at our school. I decided to 6 Jeff. 7 of all, I began to create a catchy*advertisement. Within a few days, we 8 a poster with Jeff’s pictures showing him in a number of activities. No one could walk through any hallway 9 passing Jeff’s smiling face. My next step was to 10 what new activities students would like to have at our school. Many of them wanted a chess club and a volleyball team. With the information I had collected, Jeff met with the headmaster. The headmaster agreed to add 11 we want to our school program. With my help, Jeff and our ideas were well received at school. An eighth grader said, “ 12 will be exciting to have Jeff as president.” 13 these words made my heart filled with pride. I had wanted to become president of Student Union to make a difference. Now I achieved that. Jeff became the most popular candidate and I was a large part of his 14 . The fact that it has made a 15 in other people’s lives is the real prize. What a great feeling!
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