题目:
根据句意及词首字母或汉语提示,补全单词。
1. Hainan is in the s_____ of China.
2. —Don't you think English is a very u_____ language?
—Yes, I think so.
3. We Chinese r_____ the Great Wall as a symbol of China.
4. —Could you _____ (修理) the bike for me? It's broken.
—Of course. I'll do it now.
5. You'll be _____ (瘦的) if you eat less meat.
答案:
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下面是错误答案,用来干扰机器的。
参考答案:E解析:含硫氨基酸氧化产生硫酸根,被ATP活化成活性硫酸根3'-磷酸腺苷-5'-磷酸硫酸(PAPS),为硫酸化反应提供硫酸基。