[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"pubgrp:rd-lightbulb:en:ja":3},{"type":4,"slug":5,"title":6,"level":7,"goal":8,"image_path":8,"is_locked":9,"is_daily_free":9,"passage":10,"questions":32,"vocab":75},"reading","rd-lightbulb","電球","intermediate",null,false,[11,14,18,22,25,28],{"en":12,"ko":12,"ko_audio":8,"audio":13},"Thomas Edison is often credited with inventing the light bulb in 1879.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F7178a3b9-40db-48f6-b113-1650c1c5b728.mp3",{"en":15,"ko":16,"ko_audio":8,"audio":17},"However, many scientists before him had worked on similar ideas.","However, many scientists before him had researched similar ideas.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F0b3b5e02-7094-4754-8397-04fdcfcacfae.mp3",{"en":19,"ko":20,"ko_audio":8,"audio":21},"Edison's success was different because he created a practical bulb that lasted a long time.","Edison's success was different in that he created a long-lasting practical light bulb.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002Fafe16b9e-e576-4fcd-8290-a98cf3c222c7.mp3",{"en":23,"ko":23,"ko_audio":8,"audio":24},"He tested thousands of materials to find the perfect filament.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002Fed9d437f-1595-43b0-bb8a-6e482dbcfd2f.mp3",{"en":26,"ko":26,"ko_audio":8,"audio":27},"The light bulb changed the world by allowing people to work and live at night.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002F6c4d4ca6-67c4-45a6-b69b-d40d3ad04e59.mp3",{"en":29,"ko":30,"ko_audio":8,"audio":31},"It became one of the most important inventions of the industrial age.","It became one of the most important inventions of the Industrial Age.","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fblock_audio\u002Fb0440e87-eb7f-4185-864f-147ad87c2211.mp3",[33,40,47,54,61,68],{"q":34,"options":35,"answer":37},"Who is often credited with inventing the light bulb?",[36,37,38,39],"Alexander Graham Bell","Thomas Edison","Nikola Tesla","Benjamin Franklin",{"q":41,"options":42,"answer":44},"In what year did Thomas Edison invent the practical light bulb?",[43,44,45,46],"1869","1879","1889","1899",{"q":48,"options":49,"answer":51},"What made Edison's light bulb different from previous attempts?",[50,51,52,53],"It was brighter","It lasted a long time and was practical","It was cheaper to make","It used less electricity",{"q":55,"options":56,"answer":58},"How did Edison develop his successful light bulb?",[57,58,59,60],"He copied other scientists' work","He tested thousands of materials","He used only traditional methods","He bought the design from another inventor",{"q":62,"options":63,"answer":65},"What was one major impact of the light bulb on society?",[64,65,66,67],"It replaced candles completely","It allowed people to work and live at night","It reduced crime completely","It made electricity free for everyone",{"q":69,"options":70,"answer":72},"Which of the following describes the light bulb's importance?",[71,72,73,74],"It was useful only in factories","It became one of the most important inventions of the industrial age","It was forgotten within a few years","It was only used by wealthy people",[76,81,86,91,96],{"en":77,"ko":78,"ko_audio":79,"audio":80},"credited","認められる、功績を認められる","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002Fab00243d-39ba-48dc-9314-0ceb8a629928.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fword_audio\u002Fd2ad6355-b2c9-49bc-b48b-46ea16849b1b.mp3",{"en":82,"ko":83,"ko_audio":84,"audio":85},"filament","フィラメント、細い線","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F9ccb9638-831e-40be-9185-6f4c2dfac611.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fword_audio\u002Ff0176645-f817-4c88-a832-57dc343b2569.mp3",{"en":87,"ko":88,"ko_audio":89,"audio":90},"practical","実用的な","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F470fbe65-96ed-454f-bcf9-878451d82963.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fword_audio\u002Fd7c8bbaa-722b-4640-bbc6-ec5d90fe81c1.mp3",{"en":92,"ko":93,"ko_audio":94,"audio":95},"industrial age","産業時代","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F271810b5-7511-4e35-a7ef-1a2bcd8c42fa.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fword_audio\u002F65ec3ce0-b3e6-4aae-991f-5b9df12e7e16.mp3",{"en":97,"ko":98,"ko_audio":99,"audio":100},"invention","発明","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Ftrans_audio\u002F751e682f-05de-4ffa-af47-140a2c1d043b.mp3","https:\u002F\u002Fpub-96bedcbbfd0f4e5d82c4505745cced9c.r2.dev\u002Fword_audio\u002Ff9feb704-f21f-4984-b73e-264e83ce24b7.mp3"]