Elective course of physics 3-3 talks about gas knowledge such as molecular dynamics theory.
Biology compulsory three talks about steady state and environment. Generally, the college entrance examination will give multiple-choice questions or big questions. Focus on the internal environment, regulations and population communities.
Biology elective courses are mainly based on biotechnology, and the college entrance examination is bound to produce big problems. It's difficult, but it's easy after learning.
What you have learned can be tested in the college entrance examination, which is very important!