Sound is a kind of energy that you can hear. Sound is made when something vibrates(振动). When you talk or sing,put your hand on the side of your neck. Then you will feel your neck vibrating. When you hit a drum, the drum and the air around it vibrate. When the vibrating air ...
根据第一段前两句“Sound is a form of energy that can't beseen. We can sense sound.”可知声音是一种看不见的能量形式,但能感觉到,C项错误。根据第四段第三、四“If youput a few grains of rice on the drum gently. The vibrations maycause the rice to jump.”可知轻轻地在鼓上放几粒米。
What is Sound? Sound is a form of energy, just like electricity and light. A sound is made when air molecules vibrate and move in a pattern called waves or sound waves. Think of when you clap your hands or when you slam the car door shut. That action produces sound waves, which trav...
A. Sound energy B. Light energy C. Heat energy D. Electrical E. nergy 相关知识点: 试题来源: 解析 A。当铃响的时候,产生的是声音,声音是一种能量形式,即声能。B 选项光能是由光产生的能量;C 选项热能是由温度差产生的能量;D 选项电能是由电荷流动产生的能量。反馈...
Sound is energy that travels in waves through air, water, or other substances, and can be heard. e.g. The aeroplane will travel at twice the speed of sound. 这架飞机的速度将是音速的两倍。 3.(电视、收音机、CD 机等可调节音量的)声音,音响 ...
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He's always sounding off about what a big shot he is. 他动不动就吹嘘自己是什么了不起的大人物。 泄露,透露,暴露 Keep it a secret. Don't sound off about it. 这事要保守秘密,不要泄露出去。 释义 词态变化 实用场景例句 真题例句 英英释义 词组搭配 同义词辨析 同义词 反义词 行业词典 常用俚语...
(3)What feature do spotsounds and spotlights share? DA.They travel in circles.B.They clear the atmosphere.C.They can be transformed into energy.D.They can be directed onto a specific area.(4)Directed sound can be used for C.A.creative designs of restaurant menusB.ideal...
48. What feature do spotsounds and spotlights share? AThey travel in circles., BThey clear the atmosphere., CThey can be transformed into energy., DThey can be directed onto a specific area. 49. Directed sound can be used for ___. Acreative designs of restaurant menus, Bideal s...
根据Sound is made when something vibrates(声音是在物体振动时发出的)可知声音是在物体振动时发出的。故选A。(3)主旨大意题。根据Light,heat and sound are forms of energy.Here is an introduction to them.(光、热和声音是能量的形式。下面是对它们的介绍。)可知是介绍了光、热和声音。...