Going abroad for postgraduate study is not like going home. I went to Britain and other Commonwealth countries for graduate studies, such as Canada, Australia and New Zealand. And took the IELTS test. Going to America is complicated. Generally, you must take the TOEFL test once to judge your English level. Then most majors have to take GRE, LSAT in law, GMAT in business and MCAT in medical school. These exams are used to judge your logical and professional level.

GRE test, which takes one hour to test mathematics, includes three types of questions: ① comparison of quantity; ② Separation of quantity; (3) diagram explanation, involving basic problems of arithmetic, algebra and geometry. These questions are relatively easy, so most candidates in China can get high marks in mathematics, and quite a few get full marks of 800.