Science (about 50 in mathematics, about 30 in physics and about 20 in chemistry)

Multiple choice questions: **60 questions, each with 0.8 points and ***48 points.

Multiple choice questions: **20 questions, 65438+ 0.5 points for each small question, ***30 points.

True or false (this big question has * * 20 questions, 1.65438+ 0 point for each small question, 22 points * * *