2022高一牛津英语周报第31期答案

4.B【解析】本题考查阿伏加德罗常数的应厍。溶液的体积未知无法讧算所含氮原子的物质的量,故A错误;12g石墨烯和12g金刚石的物质的量均是1mol,都含有NA个碳原子,故B正确124gP4的物质的量为24g=1mol,个P分子含有6124g·mol个PP共价键,则1molP所含PP键数目为6N,放C错误8gCO和2.8gC2H1的物质的量均为0.1mol,1个CO和1个C2H4分子中所含的质子数不相等,混合气体中二者比例未知,无法计算混合气体所含的质子数,故D错误。【易错警示】题目涉及气体体积计算时要看清是否满足标准状况这一条件,不是标准状况就不能直接标准状况下的气体摩尔体积来计算;涉及溶液中微粒数目的计算时,看有没有给出溶液的体积,否则无法直接计算,A项就是这种情况。

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

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