of

ethod emphasizes the dominant place of the students, views students as the center of all teaching activities and fully respects the individuals. In this mode the teachers are the conductors, the

可以发现温度异常的 部位，及时对疾病进行诊断治疗（见热像仪）；利用人造卫星上的红外线传感器对地球云层进行监视，可实现大范围的天气预报；采用红外线传感器可检测飞机上正在运行的发动机 的过热情况等。 具有红外传感器的望远镜可用于军事行动，林地战探测密林中的敌人，城市战中探测墙后面的敌人，以上均利用了红外线传感器测量人体表面温度从而得知敌人所在地。 被动式红外传感器

nd even responsible for fixing the 1919 World Series. He and Gatsby‟s illegal business gives evidence to the rise of crime and illicit activities in American society during the Roaring Twenties.

e teachers exploit to inspect students’ learning situation and feedback on the acquisition of knowledge. It is an efficient approach to cultivate their language intuition, which can deepen the