关于溃疡病急性穿孔，下列哪一项对诊断最有意义
A．均有溃疡病史
B．腹痛剧烈，辗转不安
C．突起脐周剧痛，转移至右下腹
D．腹部剧痛数小时后缓解，提示病情好转
E．约80％的病例有隔下游离气体
参考答案：E
解析：[解题思路] 胃十二指肠穿孔，作为上消化道，其内含有气体，在穿孔时气体经穿孔进入腹腔，积聚于膈下。腹部剧痛也是溃疡穿孔的一个重要的症状，但膈下有游离气体更有意义。
| 阅读理解。 | |||||
| |||||
| l. If you spend 100 dollars or more, you can _____. | |||||
| A. get a CD free B. get 6 hours of free parking C. get some free stamps | |||||
| 2. Buy one tie at Daniel's Menswear,you may get an-other_____free. | |||||
| A. cheaper tie B. more expensive tie C. tie of the same price | |||||
| 3. You can get a 10% discount on any books if you _____ at the Book Store. | |||||
| A. buy some gifts B. buy some tickets C. show this coupon | |||||
| 4.If you want to have free soft drink,you can go to _____ | |||||
| A. Mike's cafe B. the Book Store C. Daniel's Menswear | |||||
| 5. If John pays 10 dollars for a full-price movie ticket on Tuesdays,he can buy a second ticket for only_____ | |||||
| A. 5 dollars B. 10 dollars C. 15 dollars |
