夏天天气炎热，小明从电冰箱冷藏室中取出一瓶冰凉的饮料放一玻璃茶几上．过一会儿，小明发现饮料瓶外侧有水珠并落在茶几上，他用抹布擦试，发现茶几上面的水擦干了，但茶几下面也有水珠，小明觉得奇怪．请你给小明解释茶几下面的水珠是怎么形成的？
答：从电冰箱冷藏室中取出的饮料放在玻璃茶几上，茶几的玻璃温度降低，空气中的水蒸气遇到温度较低的饮料瓶和茶几玻璃液化成小水滴，附着在茶饮料瓶外侧和茶几玻璃下面，因此茶几下面出现小水珠．
| 阅读理解 | |
How to have fun in Chicago without spending a lot of money?
| |
| 1. This passage is written to tell us ______. | |
| A. Chicago is a big and beautiful city B. where we can see fine photos and paintings C. how to make a cheap trip in Chicago D. there are many free concerts in Chicago | |
2. It will cost you ______ if you visit the Art Institute instead of the Sears Tower on Sundays. | |
| A. more B. less C. the same D. none | |
| 3. You may go to ______ if you like to get a great view of the whole city. | |
| A. the Art Institute B. the Sears Tower C. Roosevelt University D. Grant Park | |
| 4.You have to spend at least _______ in all to stay in a dormitory room at Roosevelt University for a month. | |
| A. $100 B. $300 C. $215 D. $860 | |
5. According to this passage, w hi ch of the following is NOT true | |
| A. You are free to go to the Art Institute on Tuesdays. B. Free Grant Park concerts are held four nights a week in summer. C. The Sears Tower is the world's third tallest building. D. You can get tickets to The Oprah Winfrey Show as soon as you arrive. |