A. invented发明,一般过去时态;B. are invented被邀请;一般现在时态的被动语态;C. were invented被邀请,一般过去时态的被动语态;D. was invented被邀请,一般过去时态的被动语态,单数。电灯的发明已成为过去,这里是一般过去时态的被动语态,主语是复数,这里用were done的形式。根据句意,故答案为C。
Who invented (invent) electric lights?7. We believe the software developers (develop) must master a range of languages and tools.8. Home-made dishes may taste (taste) less delicious, but they are healthier.9. Look! The telephone is _broken_(break). Someone damaged it on purpose.10. We...
Answer to: Who invented the LED light? By signing up, you'll get thousands of step-by-step solutions to your homework questions. You can also ask...
【题目】—Do you know who invented lights? —Yes, theyby Edison. A.inventedB.are inventedC.were inventedD.was invented 查看答案和解析>> 科目:来源:题型: 【题目】When you are learning English, you find it not clever to translate an English sentence, word for word, into your own language...
Things would shoWhowa discrepancy if there was no one who Engineeringinvented geneticengineering.Upgrade Your Mercedes Performance With Bes.GE Automotive Bulbs t QualityAutomotive Bulbs And LightsInventedWho Inven,Who Invented Led? ted Genetic Engineering?,If you are wondering who invented genetic ...
Who ___ the lights? A. found B. found out C. looked for D. invented 相关知识点: 试题来源: 解析 D 【分析】invent指发明创造出以前没有的东西。这里表示过去发生的动作,用一般过去时,句子意思是:灯是谁发明的。故选D。【点评】find“发现,找到”;find out“找出,查明”;look for“寻找”。反馈...
百度试题 结果1 题目7. Who invented (invent) lights, do you know? 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Edward Hibberd Johnson added flash and color to Christmas trees when he introduced electric lights in 1882.
Over the past few years, Wu invented a signalblocking device (信号屏蔽装置) to put at crossings and escalators (自动扶梯). He also made an assistant system for traffic lights.Itsets LED light strips (光带) along the road so that drivers can see traffic lights more easily. ...
Thay有关于不同的计算机的信息,并且谁发明了他们 相关内容 aThe LED lights when its channel produces an output signal of about 4 volts RMS or more. LED光,当它的渠道导致大约4伏特一个输出信号RMS或更多。[translate] au like watching me? 正在翻译,请等待...[translate] ...