如图所示，用拇指、食指捏住圆规的一个针脚，另一个有铅笔芯的脚

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问题单项选择题

如图所示，用拇指、食指捏住圆规的一个针脚，另一个有铅笔芯的脚支撑在手掌心位置，使OA水平，然后在外端挂上一些不太重的物品，这时针脚A、B对手指和手掌均有作用力，对这两个作用力方向的判断，下列各图中大致正确的是（）

答案

参考答案：C

补全对话，情景问答

根据上下文内容补全对话。

A: What did you ____1____ last night?

B: I ___2____ to the movies.

A: ___3___ there many people there?

B: Yes. Most of them ____4____ young people.

A: How did you ___5____ the movie?

B: Very much. It was very ____6____(有趣的). And I ___7____ it very much.

A: What do you think of the actors and actresses?

B: They ____8___ all very good.

A: Which actor did you like ____9____?

B: The actor ___10___ Zhang Ziyi. I liked her very much.

单项选择题

男，56岁，阵发性腹痛6天，伴恶心、腹胀2天入院，无发热。体检：腹膨隆，见肠型，肠鸣音亢进，有气过水声，腹部X线平片见腹中部扩张小肠呈“阶梯状”液平，结肠内少量积气。可能的诊断是______

A．麻痹性肠梗阻

B．低位小肠梗阻

C．高位小肠梗阻

D．坏死性小肠炎

E．乙状结肠扭转