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问题 单项选择题 A3/A4型题

患者男，41岁。上腹疼痛7小时。伴发热，体温38.5℃，频繁呕吐。查体发现上腹部肌紧张，压痛，无移动性浊音。血白细胞15×109/L。X线检查：膈下未见游离气体。

最可能的诊断是（）

A.急性心肌梗死

B.急性胰腺炎

C.胆石症

D.胃溃疡穿孔

E.肠梗阻

答案

参考答案：B

解析：根据急性胰腺炎的典型临床表现及实验室检查，可除外心肌梗死、胆石症、胃溃疡穿孔及肠梗阻，判断为急性胰腺炎，故选B。

选择题

如图，倾斜固定直杆与水平方向成60°角，直杆上套有一个圆环，圆环通过一根细线与一只小球相连接．当圆环沿直杆下滑时，小球与圆环保持相对静止，细线伸直，且与竖直方向成30°角．下列说法中正确的是（　　）

A．圆环不一定加速下滑

B．圆环可能匀速下滑

C．圆环与杆之间一定没有摩擦

D．圆环与杆之间一定存在摩擦
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单项选择题

If you often feel tired and the doctor can’t find anything wrong with you, you may be in a state of Subhealth (亚健康). Subhealth is a state between health and illness. Most of the subhealthy people are middle-aged ones who are usually stressed out because of work and family. And some of them are students who are having exams.
If you are subheahlty, it is not difficult for you to become well soon. You should have good living habits. For example, you should get up early and go to bed early. And you should exercise regularly. Exercising can keep you healthy. As for meals, it is better to eat less salt and sugar. Vegetables, fruit and fish are important to your body. You should eat more of them. It is not good to eat too much at one meal, because it may cause unhealthy changes in the digestive tract(消化道). And at last, a balanced diet is very helpful in staying away from subhealth.

According to the passage, who will probably be subhealthy

A. Teachers and students.
B. Parents and children.
C. Middle-aged people and students.
D. The young and the old.
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