题目

如图，正方形ABCD被分成两个小正方形和两个长方形，如果两个小正方形的面积分别是6cm2和2cm2，那么两个长方形的面积和为___cm2． 答案：【答案】 【解析】∵两个小正方形的面积分别是6cm2和2cm2，∴两个正方形的边长分别为和，∴两个矩形的长是,宽是，∴两个长方形的面积和=2××=4cm2.故答案为：4.If you are like most international students, you are probably pretty comfortable reading and writing in English. 【1】 Below are some tips to help you to improve your conversational skills.Make friends with American students. Many international students end up making friends with a lot of—or only—other international students. 【2】 Hanging out with natives not only naturally pushes you to improve your spoken English, but also helps you pick up cultural and social information.Learn from American friends. Tell your American friends that you are trying to improve your listening and speaking skills, and would like them to help you. If you pronounce a word incorrectly, or misuse an idiom, you ask them to guide you. 【3】Increase your knowledge. 【4】 If you have been exposed to topics that are likely to be discussed in conversation, you have a much better chance of understanding people when they talk, and of being able to express yourself well.【5】 If you have to explain something to someone, you have a strong motivation to pronounce everything as well as you can, and find other ways to explain yourself. Finally, this becomes a good habit. Many people have asked me how I learned to speak English fluently, and I owe most of it to my years of being a math teacher in college for years.A. It is bad for them to do that.B. You will make progress this way.C. If possible, become a teacher at your school.D. It's a win-win opportunity for international students.E. Keep up with news and watch popular shows and movies.F. Explaining everything in a different way counts.G. You may have trouble in listening and speaking in the language, however.