【正确答案】正确答案：Computer-assisted instruction (CAI) means the use of a computer in a teaching program. This includes: a. A teaching program which is presented by a computer in a sequence. The student responds on the computer, and the computer indicates whether the responses are correct or incorrect. b. The use of computers to monitor student progress, to direct students into appropriate lessons, material, etc. This is also called computer-managed instruction. Parallel to CAI, there is CAL (Computer-Assistant Learning). The former aims at seeing educational problems on the part of the teacher, whereas the latter emphasizes the use of a computer in both teaching and learning in order to help the learner achieve educational objectives. The first kind of CAL programs which were developed reflected principles similar to programmed instruction. The computer leads the student through learning task step-by-step, asking questions to check comprehension. Depending on the student's response, the computer gives the student further practice or progresses to new material (see branching). In more recent CAL courseware students are able to interact with the computer and perform higher-level tasks while exploring a subject or problem.