A．It’’s the ultimate cause of winds.
B．It causes vertical movements of air.
C．It reduces differences in air pressure.
D．It’’s used to predict weather patterns.

A．It focuses on the development of the student’’s ability for independent scholarly work in a particular field.
B．It focuses on a variety of fields of knowledge and emphasizes the development of the student’’s ability for independent research of all fields.
C．It focuses on a specific field of knowledge and emphasizes the development of the student’’s ability of cooperation.
D．Not mentioned.