mathematics
Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.
English
English English is also the most widely used second language in the world, and it is also one of the official languages of the European Union, most international organizations and Commonwealth countries. But it has only the third mother tongue in the world, less than Chinese, Mandarin and Spanish.
Computer network technology
Computer network technology is the product of the combination of communication technology and computer technology. Computer networks include computers and networks. Among them, computer, also known as electronic computer, is a kind of modern intelligent electronic equipment that can run according to the program and automatically process massive data at high speed.