洗澡的时候，也会涉及到不少的物理知识，如图所示．请写出下列现象对应的物理知识．
| 现象 | 物理知识 |
| 房间的玻璃镜面变得模糊不清 | ______ |
| 用吹风机将头发吹干 | ______ |
| 用表面粗糙的洗澡巾搓背 | ______ |
玻璃镜面的小水滴是由空气中的水蒸气遇冷液化形成的．
吹风机，加快了空气的流动速度，从而加快了水分的蒸发．
表面粗糙的洗澡巾，增大了接触面的粗糙程度，从而可以增大与皮肤的摩擦力．
故答案为：水蒸气遇冷液化；
加快空气流动速度加快水分蒸发；
增大接触面的粗糙程度增大摩擦．
| 阅读理解。 | |
| Teens-want to gain valuable work experience? Do you enjoy working with kids? Need to finish community service requirement for school? Volunteer for the alameda recreation and park department! Volunteers are needed to help Recreation Leaders with youth programs and special events at our local park. During the summer, volunteers are also needed to help with our Aquatics Program at the swim center as well. This is a perfect opportunity to gain valuable work experience for future employment opportunities. Don't delay (延迟)! Spaces Are Extremely Limited! Sign up early! ●You may register in person or mail the completed form and payment to: Alameda Recreation and Park Department, 2226 Santa Clara Avenue, Alameda, 94501. ●Faxed registrations accepted with MasterCard/ VISA,(510)747-7566. Once your application has been reviewed (审查), you will be contacted by the Teen Coordination to plan an oral interview. If you are accepted into the program, you must attend a volunteer training. All applications are to arrive no later than two weeks before the training date (listed below) and are limited to space availability. Not all applications will be surely given an interview. Late Applications will not be dealt with.
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| 1. We can know from the passage that the program can _____. | |
[ ] | |
| A. teach kids to swim at the swim center B. train teens to be prepared for job interviews C. offer people who are out of work some jobs D. provide a chance for volunteers to get work experience | |
| 2. Once you are allowed to join in the program, you _____. | |
[ ] | |
| A. will be trained for volunteering B. will have a face to face interview C. must contact the Teen Coordinator D. will pay $45 for the materials | |
| 3. To join the program, you should register _____. | |
[ ] | |
| A. on Thursday, May28, 2009 B. before Thursday, May 14, 2009 C. after Thursday, May 28, 2009 D. before Thursday, June 11, 2009 | |
| 4. What information can we get from the passage? | |
[ ] | |
| A. You will be interviewed once you apply. B. You can register by sending an email. C. There is a limit to the number of volunteers. D. The training will last about two weeks. |