简答题Materials chosen for a listening exercise must be hard enough so that students cannot do it without knowing the language of the passage, but it should also be easy enough for students to comprehend.简答题Make sure students understand the concept and specific instructions on how they are supposed to complete the tasks should be given before the listening exercise.简答题The goal of a listening class is to test students’ overall comprehension of the listening material and to obtain correct answers to questions.简答题Without understanding why errors occurred, teachers may not be able to help students avoid similar errors next time.