根据句意和首字母提示完成句子。

1. Nowadays, children often surf the I______ on weekends.

2. My favorite TV p_____  is Animal World. It's very interesting.

3. Our eating h_____ are good, so I am in good health.

4. The r_____ of the exam is coming out. I can't wait to know it.

5. If you want to keep healthy, you'd better do e______ every day.

6. Tom h_____ ever runs every morning because he is lazy.

7. There are many d_____ between the pictures.

8. She is kind of u_____ because she never eats vegetables.

9. I usually do my homework before supper, but s______ I do it after supper.

10. In summer I often go s______ with my friend. The water is very cool.

如图所示，带有活塞的气缸中封闭着一定质量的理想气体，气缸与活塞均具有良好的绝热性能．将一个热敏电阻置于气缸中（热敏电阻的阻值随温度的升高而减小），热敏电阻与气缸外的欧姆表连接，气缸固定不动，缸内活塞可自由移动且不漏气，活塞下挂一沙桶，沙桶装满沙子时活塞恰好静止．现将沙桶底部开一小孔使沙子缓慢漏出，下列说法正确的是（　　）

A．气体体积减小，压强增大

B．气体对外界做正功，气体内能减小

C．外界对气体做正功，气体内能增大

D．欧姆表指针逐渐向右偏转