Since 20021,Liaoning province, as the third batch of "new college entrance examination" pilot provinces, will implement a new college entrance examination model, namely "3+ 1+2" model. Among them, "3" is the national unified examination subject Chinese, mathematics and foreign languages, and all students must take it. "1" is the preferred subject, and candidates must choose one of the physics and history subjects in the high school level examination; "2" is a re-selected subject, and candidates can choose two of the four subjects of chemistry, biology, ideology and politics and geography. The total score of Liaoning college entrance examination is 750. The full marks of Chinese, mathematics and foreign languages are all 150, and the full marks of six elective subjects, such as physics, chemistry, biology, politics, history and geography, are all 100.