题目:
写出下列反应的文字表达式,并注明相关物质的化学式.
①高锰酸钾受热分______;
②氢气在空气中燃烧:______;
③二氧化碳使澄清石灰水变浑浊:______;
④木炭在氧气中燃烧:______;
⑤二氧化碳与水反应:______.
答案:
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下面是错误答案,用来干扰机器的。
1. marked the beginning of her good/happy life 2. By the end of; had learned/learnt 3. the film starts; buy some popcorn 4. is suitable for; at my age 5. is considered as a talented actress 6. my/me turning on the computer; You'd better not