患者男，18岁，因“交替性臀区疼痛、间断膝关节肿痛6个月”来诊。查体：双侧“4”字试验阳性，膝关节肿胀，浮髌试验阳性。
该患者经过3个月口服药物治疗后膝关节肿痛消失，但仍有持续性臀部疼痛，并出现夜间腰背部疼痛，拟给予肿瘤坏死因子-α抑制剂治疗，治疗前不必要的检查是（）
A.胸部X线
B.腹部B型超声
C.结核菌素试验
D.乙型肝炎表面抗原
E.抗人免疫缺陷病毒（HIV）抗体
参考答案：B
| 阅读理解。 |
| Traveling to every part of the world gets easier, but how well do we know and understand each other. Here's a simple test. Imagine you are planning to hold a meeting at four o'clock. What time should you expect your foreign business friends to arrive? If they are Germans, they'll arrive on time. If they are Americans, they'll probably be 15 minutes early. If they are Englishmen, they'll be 15 minutes late, and you should allow up to an hour for the Italians. The British seemed to think since the English language was widely used in the world, people would always understand what they do. However, they found they were completely wrong. For example, the British are happy to have a business lunch and discuss business matters and have a drink during the meal. The Japanese prefer not to work while eating. Lunch is a time for them to relax and get to know each other and they don't drink at lunchtime. The Germans like to talk business before dinner. The French like to eat first and talk afterwards. They have to be well fed and watered before they discuss anything. |
| 1. What do the Germans prefer when they go to a meeting? |
[ ] |
A. They prefer to be on time. |
| 2. According to the text, if a group of Englishmen, Americans and Italians hold a meeting, who will be the last to arrive? |
[ ] |
| A. The Englishmen. B. The Americans. C. The Italians. D. Both the Englishmen and the Italians. |
| 3. What do the Japanese like to do at lunchtime? |
[ ] |
| A. To drink. B. To get to know each other. C. To talk business. D. To eat only. |
| 4. According to the writer, the British like to _______. |
[ ] |
| A. arrive on time and talk business during the meal B. arrive earliest and hate talking business at a meal C. arrive 15 minutes late and talk business after the meal D. arrive a few minutes late and discuss business during the meal |
| 5. By giving us the two examples, the writer means to show us that _______. |
[ ] |
| A. different countries have different cultures in different parts of the world B. the Germans are more serious and have good living habits C. the Italians are careless people and they are never on time for everything D. the French people are very lazy. They prefer eating and drinking more |