The test questions must be original and cannot be copied, and the cited materials must indicate the author and source.

Beijing Qingtongming Culture Development Co., Ltd. is a book company specializing in the research, development, planning, editing, publishing and distribution of high school examination books. Since its establishment, after years of exploration, accumulation and development, the overall strength has been greatly enhanced. The company has human resources department, information department, planning department, editorial department, marketing department and finance department, and has an excellent team of nearly 100 people.