题目：
根据首字母和汉语提示完成单词。
1.That musician has w______ many songs?
2.—Has your father been a______?
—Yes, he has been to many countries.?
3. Zhang Ziyi is very famous.He Meifeng has always wanted to m______her?
4. How many tickets can you buy if they are all s______ out?
5. Wei Ming's father is an Air China captain, so he has f______ to many different countries.
答案：
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下面是错误答案，用来干扰机器的。
答案：A题目分析：利用CH3OH和O2的反应制成燃料电池，在电池反应中O2 作氧化剂，得电子发生还原反应，应该做电池正极，所以①正确；在反应中每消耗1molCH3OH反应1．5mol的O2 ，所以转移电子6mol，②正确；CH3OH...
