问题
选择题
以下关于燃烧现象的描述，正确的是[ ]
A．硫在氧气中燃烧发出淡蓝色火焰
B．铁丝在氧气中燃烧火星四射
C．蜡烛在氧气中燃烧产生大量白烟
D．碳在空气中燃烧生成二氧化碳
答案
答案：B
搜题请搜索小程序“爱下问搜题”
以下关于燃烧现象的描述，正确的是[ ]
A．硫在氧气中燃烧发出淡蓝色火焰
B．铁丝在氧气中燃烧火星四射
C．蜡烛在氧气中燃烧产生大量白烟
D．碳在空气中燃烧生成二氧化碳
答案：B
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| Mr Li and his wife live in a city. He 1 hard in his office. He likes to read something when he's 2 . And he often watches TV or listens to the 3 at home. So he knows a lot. A few days ago an important 4 was held in Beijing. Mr Li was interested in it. That afternoon, on his way home, he went to the post office and 5 a newspaper. When he got home, he put it on the table and began to 6 .Soon his wife came back, and she began to tidy up the room. After 7 Mr Li wanted to read the newspaper, but he could not find it. "What are you 8 ?" asked his wife. "A newspaper." "I 9 it away a moment ago. " "Why did you do so?" Mr Li said angrily. "It's new. There's 10 in it." "I don't think so," .said the woman. "I put some rubbish in it, and threw it away. " | ||||
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