註釋 An experimental investigation conducted in a rural area of the Province of Quebec (Canada) was designed to show that the assignment of specific reading tasks enhances the development of listening comprehension ability when using authentic video material with intermediate-level English-as-a-Second-Language (ESL) learners. Using a pre-test post-test control group design, the study involved 53 students. It was found that through the use of scripted authentic video materials combined with specific reading and listening tasks, the ESL learners in the experimental group showed significant progress in listening comprehension ability. However, the ESL learners in the control group who were merely assigned specific listening tasks showed no significant progress in the same ability over the same period of time. It is concluded that reading a tapescript of video materials prior to viewing them prepares learners to recognize and decode what they hear. Appended are: a description of content in audio-visual materials and nature of listening tasks; vocabulary and expressions studies; and video quizzes. Contains 31 references. (LB) 