判断题 In Hammer’s five-step model, the purpose of “elicitation” is to provide the teacher with feed back as to what to do next.（）

判断题 In the “language awareness” exercise, the statement “The baby’s crying” informs about a third person’s whereabouts.（）

判断题 An exercise with heterogeneity can also have a positive effect on learner attitude and motivation. It provides an opportunity for the teacher to give slower or less confident students the approval and encouragement they need.（）