讲台上,老师在绘声绘色地说课,而讲台下的学生却听得不是那么享受,这是为什么呢?这个罪魁祸首就是别在老师腰问的便携式扩音器,俗称“小蜜蜂”。虽然它能扩大老师的声音,但时不时会传出刺耳的啸叫声,给学生听课带来新的困扰。而有一个高中生,从“小蜜蜂”的啸叫声中得到启发,并凭借“让话筒远离啸叫”的科研项目,荣膺中国第十五届“明天小小科学家”称号,并获10万元奖金。这个充满科 The podium, the teacher vividly said class, but the students under the podium did not hear that enjoyment, which is why? The culprit is not the teacher asked the portable speaker, commonly known as “bee”. Although it can expand the teacher’s voice, but from time to time will be heard shrill whistle, to the students to bring new problems. And a high school student, inspired by howling of “Bee ” and rewarded with the title of “China’s Little Scientist” by virtue of its scientific research project of “Keeping Microphones from Whistling” Title, and won 100,000 yuan bonus. This is full of subjects