In multimedia assisted instruction in foreign languages, computer technology is combined with language teaching, which leads to a new stage of instruction in foreign languages.

Intelligent Computer Assisted Instruction (ICAI) is one of the application modes in CAI. It is based on the artificial intelligence science, cognitive science and thought science.

As a part of computer-assisted instruction, the objectivity, fairness and comprehensiveness of computer examination system are becoming more and more concerned by people.