In fact, the "black volume" and "white volume" in black and white volumes complement each other. The Institute specially invited experts on the proposition of senior high school entrance examination to conduct in-depth research and analysis on the proposition characteristics of 10. In view of the compulsory test points and high-frequency points in the senior high school entrance examination, the topic is polished and examined in strict accordance with the proposition process of the senior high school entrance examination, and the black and white volumes are complementary propositions.

When using black and white papers, it should be completed within the time specified in the regional senior high school entrance examination, and give full play to the maximum value of the papers.