题目

午睡期间，校园外的工地上的轰鸣声，吵得同学们睡不着觉。甲同学起身关上了窗户；乙同学索性用卫生纸堵住了耳朵，他们减弱噪声采取的途径分别是：甲在______     __减弱，乙在________减弱。  答案：在传播过程中减弱噪声，在人耳处减噪声解析:减弱噪声的三种途径：声源处减弱；传播过程中减弱；人耳处减弱。 说说下列诗句中加横线字的意思。   1．萁在釜下燃，豆在釜中泣。     萁：                                                            釜：                                                      2．时鸣春涧中。       时：                                                3．留连戏蝶时时舞，自在娇莺恰恰啼。       留连：                                                         恰恰：                                                   4．千磨万击还坚劲，任 尔东西南北风。      任：                                                            尔：                                                       5．潇潇暮雨子规啼。     潇潇：                                                        子规：