问题 填空题

唐代诗人李白在《月下独酌》诗中写到“举杯邀明月,对影成三人”.“影”的形成是由于_________.

答案

:光的直线传播

影子是光射不到的地方形成的黑暗区域,它是由于光的直线传播形成的.

问答题

       中 * * 党必须始终代表先进生产力的发展要求,所以党始终把发展社会生产力放在第一位。请你结合中共八大、十一届三中全会和中共十三大的相关史实,指出党和政府为发展社会生产力作出了哪些努力。

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

多项选择题