“悬念”作为一种学习心理机制,是由学生对所解决问题存在的未完成感和不满足感而产生的。教学中,适时地创设“悬念”,将会使教学过程成为一种学生渴望不断探索、追求知识的心理需求。实践证明:学生在学习中产生的这种心理需求具有巨大的潜在能量,它能激发学生的学习动机和兴趣 Suspense, as a psychological mechanism of learning, arises from students’ incompleteness and dissatisfaction with the problems they solve. Teaching, timely creation of “suspense”, will make the process of teaching a desire to continue to explore, the psychological needs of the pursuit of knowledge. Practice has proved that the psychological needs of students in learning have great potential energy, which can stimulate students’ motivation and interest in learning