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说明:本试卷共有46题单项选择题,第1至40题每题3分,第41题至46题每题5分.全卷满分150分,答题时间为90分钟. 1.在雷电来临时,电光一闪即逝,但雷声却隆隆不断,这是因为( )A.雷一个接一个打个不停B.双耳效应C.雷声经过地面、山岳和云层多次反射造成的C.电光的传播速度比雷声
Description: This paper has a total of 46 questions single-choice questions, 1 to 40 questions each question 3 points, 41 to 46 questions each question 5 points. Full volume out of 150 points, answer time is 90 minutes. 1. In the lightning The electro-optic flashes, but the thunder is rumbling, because (A) thunder does not stop one by one B. The binaural effect C. The thunder is caused by multiple reflections of the ground, mountains, and clouds. The rate of transmission of electro-optic light is faster than thunder