同学们,我们特地为下面这些文章制作了答题卡,在刊物的中间插页部分,可取下作答。记得把你们的使用感受告诉我们哦!人们通常认为,所有的动物在经过一段时间的运动后,就会感到疲倦,并且需要睡眠来调节。任何动物在睡眠时尽管有 Students, we have specially created answer sheets for the following articles, which can be removed from the middle insert of the publication. Remember to tell us how you feel about it! People generally think that all animals feel tired after a period of exercise and need sleep to adjust. Any animal despite having sleep