You can apply as long as you meet the requirements of this major. It is relatively easy to transfer between liberal arts, science and engineering, or literature to science. The most important thing is to contact the tutor, which is true, but try to get the recommendation of the tutor!

American doctoral application conditions

TOEFL (TOEFL score) 550-600; The new TOEFL must be above 100. GPA (average score of undergraduate studies, especially majors) 2.7-3.0; Most American schools require to apply for a master's degree, with a minimum GPA of 3.0 and a doctorate of 3.5. GRE score: 1 100- 1200 (Chinese+Mathematics);

Postgraduate management entrance examination

Applying for MBA in American business schools requires GMAT scores and work experience; 3 letters of recommendation; Fill in the application form of the school; Personal statement and study plan; Financial proof.