Most of SAT2' s knowledge of mathematics, physics and biology is from junior high school to senior high school in China, but only the basics are tested. High school physics will involve relativity, but a paper only involves 1 to 2 questions. Mathematics needs matrix test and self-study. There is an official official guide that lists the contents to be tested, which is authoritative and will never exceed the outline. Practice the questions after reading the official guide. Recommended.

SAT 1 doing OG, Princeton 1 1, online courses, Barron (reading) and real questions.

I usually write more compositions, recite sat vocabulary and read original English novels.