物质在氧气中燃烧的实验现象描述正确的是

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物质在氧气中燃烧的实验现象描述正确的是（）

A：硫在氧气中燃烧，发出明亮的蓝紫色火焰，产生二氧化硫气体

B：木炭在氧气中燃烧，发出白光，放出热

C：红磷在氧气中剧烈燃烧，产生大量白色烟雾

D：细铁丝在空气中剧烈嫩烧，火星四射，生成黑色固体

上一题下一题 0.0难度选择题更新时间:2021-11-23 21:00:27

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B

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    There's a big supermarket called Jiahui in our city. It's very 1 to find. It is in the center of our city. It's2 the bus stop and it’s also very easy to take a taxi, too.
    The supermarket is big3nice. It4 at 8:30 a.m. and closes at 10 p.m. So every day, lots of people go5 at it 6work. You can buy 7, drinks, clothes, shoes, vegetables,…and stationery there. The workers at the supermarket are very 8 . So many people like shopping there.
    At the weekend, people don’t go to work or go to school, so there are 9 people shopping there. We must10 our turn a long time to pay for what we buy.

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