The textbook of the third lesson of Compulsory 3 says: "Confucianism in Sui Dynasty put forward the idea of" integrating the three religions into Confucianism ",also known as" integrating the three religions ". And Wu Song of Fudan University. C

Sikuquanshu preserved a lot of historical materials, but we can't judge from this series that there was no "three religions in one" before the Yuan Dynasty, so item A was wrong and item C was correct. Sikuquanshu is divided into four parts, which contain a lot of historical materials, but it is wrong to say that historical materials are more credible than textbooks, and item B is excluded; The three religions refer to Taoism, Buddhism and Confucianism, and the unity of the three religions refers to the mutual integration of their thoughts and D mistakes.