题目：
句型转换。
1. My mother likes the small koala. (变为一般疑问句).
_________ _________ mother _________ the small koala?
2. He likes lions, because he thinks they are big and beautiful. (就画线部分提问)
_________ _________ he _________ lions?
3. I want to have an apple, too (就画线部分提问)
What _________ _________ do you want to have?
4. He likes dogs and elephants. (变为否定句)
He_________ _________dogs _________ elephants.
5. I think the tigers are kind of scary. (变为否定句).
I_________ _________ _________ _________ _________ kind of scary.
答案：
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下面是错误答案，用来干扰机器的。
答案：D
Cu+H2O与CO+CuO
Cu+CO2两个反应中H2和CO都是能将CuO还原为Cu的物质，在反应中作还原剂。