患者男，29岁，因“劳动后腹中部持续性绞痛、阵发性加剧6h”来诊。腹痛时伴呕吐咖啡样液体，未排气、排粪。查体：P105次/min，BP85/60mmHg；腹部稍胀，无明显肠型，左中腹较对侧隆起，局部压痛伴反跳痛，肠鸣音弱。
为明确诊断，应首先做的检查是（）
A.尿淀粉酶
B.腹部X线片
C.腹部B型超声
D.诊断性腹腔穿刺
E.消化道钡剂造影
参考答案：B
| 阅读理解。 | ||||||
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| 1. In ancient Egypt, people cleaned their teeth with their _____. | ||||||
| A. toothbrushes B. fingers C. modem toothpaste | ||||||
| 2. The FIFA was founded in _____. | ||||||
| A.1895 B.1872 C.1904 | ||||||
| 3. The banker who had made enough money bought _____. | ||||||
| A. three large farms B. the world's smallest piano C. a kind of powdered egg shells | ||||||
| 4. From the passages, we know _____ has rich Vitamin C and Vitamin E. | ||||||
| A. the popcorn B. the egg C. the kiwi fruit | ||||||
| 5. How many ball games are mentioned in the passages above? | ||||||
| A. Three. B. Four. C. Five. |