题目

下列现象及其解释正确的是（） A . 扫地时可以看到尘土飞扬，说明分子在做无规则运动 B . 红墨水在热水中扩散的比冷水快，说明温度越高，液体扩散越快 C . 铅笔使用一段时间后会变短，说明气体分子之间有斥力 D . 黄豆与芝麻混合，总体积变小，说明分子之间有空隙 答案：BWe call the Chinese New Year the Spring Festival. There is a name for each Chinese year. We may call it the year of the sheep, the year of the monkey or the year of the pig. And this year is the year of dragon. Before New Year’s Day, people are busy shopping and cleaning their houses. On New Year’s Eve, there is a big family dinner. After dinner all the families stay up late to welcome the New Year. On the first day of the New Year, people put on the new clothes and go to visit their friends. They say “Good luck” and some other greetings (问候) to each other. People usually have a very good time during the festival. 1.How many Chinese festivals are talked about in this passage? A. One    B. Two    C. Three    D. Four 2.We can find that every Chinese year is given ______ name. A. an animal    B. a plant    C. a family    D. a full 3.The underlined phrase “stay up” in the passage means “______”. A. 建造    B. 张贴    C. 熬夜    D. 起立 4.On New Year’s day, people say “______” to each other when they meet. A. Merry Christmas    B. Good luck    C. Happy New Year    D. Both B and C 5.The best title (标题) for this passage is ______. A. Good time     B. The Spring Festival      C. Big dinner    D. The Year of the Dragon