The light bulbs by Edison. 相关知识点: 试题来源: 解析 were invented 【详解】 根据题干可知,空处缺少“是……发明的”,用动词invent表示“发明”,时态为一般过去时,主语the light bulbs和动词为被动关系,且主语是复数,应用一般过去时的被动语态,其结构为were+动词过去分词。故填were invented。反馈...
解答 答案:D 根据Light bulbs ___ by Thomas Edison 可知:Light bulbs和invent构成被动关系,应用被动语态.又根据more than one hundred years ago.可知用一般过去时,所以用一般过去时的被动语态,被动语态的构成:助动词be+及物动词的过去分词,故选:D. 点评 主要考查被动语态,当句子的主语是动作的承受者,应该用被...
解答 答案:D 根据Light bulbs ___ by Thomas Edison 可知:Light bulbs和invent构成被动关系,应用被动语态.又根据more than one hundred years ago.可知用一般过去时,所以用一般过去时的被动语态,被动语态的构成:助动词be+及物动词的过去分词,故选:D. 点评 主要考查被动语态,当句子的主语是动作的承受者,应该用被...
Bulbs before Thomas EdisonThere were multiple bulbs created before Thomas Edison offered his solution to the incandescent light problem in 1879: the carbon filament light bulb.Many different minds worked on creating the world’s first light bulb. Alessandro Volta, the namesake of the volt, is ...
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Light bulbs ___ by Thomas Edison more than one hundred years ago.( )inventinventedare inventingwere invented 答案 D此题答案为:D 根据Light bulbs ___ by Thomas Edison 可知:Light bulbs和invent构成被动关系,应用被动语态.又根据more than one hundred years ago.可知用一般过去时,所以用一般过去时的被...
B (8分)The light bulb Thomas Edison developed the first practical light bulb in 1879. Before the invention of the light bulb, people had to use oil lamps, gas lamps or candles to see at night. With light bulbs, people can do as many things in the evenings as they can in the daytime...
However, many Americans’ first exposure to electric lighting was with Edison DC systems (powering his patented light bulbs). His involvement was instrumental in the public’s acceptance of the new technology. “Thomas Edison was already the most famous inventor in the world when he added to his...
In 1880, Edison formed the Edison Illuminating Company to manufacture and market his new light bulbs. However, before he could patent his new developments, over in England Joseph Swan used them to improve his own light bulb designs. Infuriated, Edison sued Swan for copyright infringement. Unfortun...
Bulbs before Thomas Edison There were multiple bulbs created before Thomas Edison offered his solution to the incandescent light problem in 1879: the carbon filament light bulb. Many different minds worked on creating the world’s first light bulb. Alessandro Volta, the namesake of the volt, is ...