生物降解
参考答案:复杂的有机物质被生物降解成为低分子量产物的过程。
句型转换。
1. I can see two cups of tea there. (对画线部分提问)
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2. I can see two cups of tea there. (对画线部分提问)
3. I would like something to eat. (改成否定句)
4. I want to have fish. (对画线部分提问)
5. I would like to drink some coffee. (改成一般疑问句)
6. There is a glass of orange over there. (用two代a改成复数句)