题目

设NA为阿伏加德罗常数的值，下列说法不正确的是（） A . 标准状况下，11.2L三氯甲烷中含有分子数为0.5NA B . 常温常压下，2gD2O中含有电子数为NA C . 46gNO2和N2O4混合气体中含有原子数为3NA D . 1 mol Na完全与O2反应生成Na2O和Na2O2 ， 转移电子数为NA 答案：A阅读理解。     Apple Seeds     Circulation(发行量): 1 Year, 9 Issues      Cover Price: $44.55      Price For You: $33.95      Product Description: Apple Seeds is an award winning magazine filled with stories for kids aged from 7 to 9. The cover is very soft, providing durability that allows each issue to be enjoyed for many years to come. Besides, there is a big surprise for you --- it's being sold at a more favorable discount than usual.      Better Life      Circulation: 1 Year, 12 Issues      Cover Price: $44.55      Price For You: $15.00      Product Description: Designed for those who have a strong interest in personal lifestyle, Better Life is America's complete home and family service magazine. It offers help with food, recipes, decorating, building, gardening, family health, money management, and education. Humor Times      Circulation: 1 Year, 12 Issues     Cover Price: $36.00      Price For You: $11.95      Product Description: Humor Times Magazine is for those who love to laugh! Full of cartoons and humor columns, it shows up in your mailbox once a month and keeps you smiling all year round! In today's world, you need a reason to laugh. So let's find it in Humor Times.      News China      Circulation: 1 Year, 12 Issues     Cover Price: $47.88      Price For You: $19.99      Product Description: News China Magazine is the English edition of China Newsweek. The magazine covers the latest Chinese domestic news in politics, business, society, environment, culture, sports and travels, etc. It is the first comprehensive news magazine for readers interested in China. 1. What do we know about Apple Seeds? A. The soft cover enables it to be read and kept long. B. It can be purchased as an award for your children. C. It offers the biggest discount among all the magazines. D. The magazine is going to surprise you for many years. 2. Tom wants to beautify his house, so he may choose ______. A. Apple Seeds B. Better Life C. Humor Times D. News China 3. What kind of people may buy News China?A. People who have an interest in Personal lifestyle of the Chinese. B. People who have a strong sense of humor and love to laugh. C. People who want to enlarge the knowledge of their kids. D. People who are interested in China's politics, business and culture. 4. Which magazine costs you the least if you buy it for the whole year? A. Apple Seeds B. Better Life C. Humor Times D. News China 5. Which magazine may best help relieve your work stress? A. Apple Seeds B. Better Life C. Humor Times D. News China