The three-year simulation of the five-year college entrance examination every year is divided into two versions, A and B, which have not been revised since 20 12. . . There are many versions of B in the market, because most of them are real exercises, while version A is a pro-explanation, and the summary and explanation of knowledge points are more systematic and clear. . . Also as a knowledge point, I hope everyone will choose version B. . The college entrance examination questions over the years are helpful to your absorption, understanding and application of knowledge points. . . It is appropriate to use version B, and those with low level only know that it is appropriate to use version A in an all-round way. . . The new curriculum standard is applicable to Guangdong, and Guangdong and Ningxia are the earliest areas of curriculum standard. . . There is also the AB version of science mathematics, which only separates the explanations of the questions and makes a systematic book. B version still has a small amount of explanation!