1·What are the problems of oil lamps according to Paragraph 1?
根据第一段，油灯存在哪些问题？
2·The villagers were forced to use oil lamps, which are not only expensive but also dangerous because of the harmful gases they produce.
村民们被迫使用油灯，油灯不仅昂贵，而且它们所产生的有害气体十分危险。
3·In ancient China, people used oil lamps at night.
在中国古代，人们晚上使用油灯。
4·If these officials saw the light of oil lamps in someone's home and heard the sound of reading, they would knock on the door and say, "The mayor adds oil for your lamp!"
如果这些官员看到有人家里的油灯亮着，而且听到读书的声音，他们就会敲门说：“市长给你的灯加了油！”
5·Coal gas rivaled smoky oil lamps and flickering candles, and early in the new century, well-to-do Londoners grew accustomed to gaslit houses and even streets.
煤气可与烟雾缭绕的油灯和摇曳不定的蜡烛相媲美，在新世纪之初，富裕的伦敦人逐渐习惯了有煤气照明的房子，甚至街道。
6·The house was lit with oil lamps.
房子点燃油灯来照明的。
7·Many families use kerosene oil lamps.
很多家庭使用煤油灯。
8·They used oil lamps. And that's how the children did their homework.
人们晚上点油灯。孩子们也借助油灯写作业。
9·The house was lighted by coal-oil lamps and heated by potbellied stoves.
屋子用煤油灯照明，用一个炉膛突出的火炉取暖。
10·People used to light rooms with oil lamps in the past. Now they use electricity.
人们过去用油灯照明，如今都用电了。