If it is a model high school, use version B; If it is an ordinary high school, use version A. In short, version A is easier than version B! ~ of course, it's like the math in Haidian District, Xicheng, using version B! ~ that's why people do well in the college entrance examination every time! ~ You can also go to other bookstores alone to buy the People's Education Edition or the textbooks in Xicheng District of Haidian! ~ this is conducive to the complementarity between subject knowledge points! ~ the college entrance examination is a topic that synthesizes all the textbooks used in Beijing! ~ Come on! ~ as long as you work hard, you will succeed! ~