All about lightbulbs.The article presents questions and answers related to light bulbs on topics including the brightness of compact fluorescent light bulbs (CFLs), the value of halogen bulbs, and whether LED (light emitting diode) bulbs contain toxins....
【解析】【详解】句意:我们都知道,哥伦布发现美洲大陆,爱迪生发明了灯泡。本题考查discover和invent之间地区别。Discover译为“发现”,表示发现之前存在的东西;invent译为“发明”,表示创造出之前没有的物品。本题中第一空美洲大陆是之前存在的东西,为发现;第二空灯泡是发明出来的,故选C。反馈...
百度试题 结果1 题目As we all know ,Columbus ___America and Edison ___light bulbs. A. discovered ; invented B. invented ; discovered C. discovered ; discovered D. invented ; invented 相关知识点: 试题来源: 解析 A 反馈 收藏
All type of light bulbs such as fluorescent | incandescent | halogen | Energy Saving | Specialty Light | H.I.D. | Neon | Ballasts | Miniature Bulbs and many other light bulbs at lowest prices.
结果一 题目 10. Look at those old cameras and light bulbs (灯泡). They are all ancientA. inventorsB. inventionsC. invent 答案 B相关推荐 110. Look at those old cameras and light bulbs (灯泡). They are all ancientA. inventorsB. inventionsC. invent ...
【解析】答案:C.discover是发现本来就存在的事物.America本身就在,故用discovered,invent是发明创造出一个原本没有的新事物.light bulbs是发明创造出来的,故invented.故选C. 相关推荐 1 As we all know ,Columbus America and Edison light bulbs. A. discovered ; invented B. invented ; discovered C. discover...
All of those ___ bulbs led to the building of specialized light fixtures, from the desk lamp you study by, to the ugly but beloved hand-painted Chinese lamp you inherited from your grandmother, to the ceiling fixture in your closet, to the light in your oven or refrigerator, and to the...
Like ultraviolet radiation, visible blue light — the portion of the visible light spectrum with the shortest wavelengths and highest energy — has both benefits and dangers. Here are important things you should know about blue light: 1. Blue light is everywhere. ...
百度试题 结果1 题目 6. As we all know, Columbus CAmerica and Edison light bulbs. A. discovered; discovered B. invented; invented C. discovered; invented D. invented; discovered 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
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