“全国自强模范”楼宝，身残志坚，凭学识发明专利，并帮助残疾人致富。回答小题。
阅读短文，下列问题
B
Amy
I like singing. I can play the guitar and the piano. I want to join the music club.
Bill
Do you want to know my favorite sport? I like playing basketball very much.
I can playing it well.
Jackie
I like playing the piano very much. I often play the piano after school.
Frank
My favorite sport is playing soccer, and I’m good at it.
第31届夏季奥林匹克运动会，将于2016年8月5日在巴西的里约热内卢举行。如图是许海峰为新中国夺得的第一块奥运金牌，请问这是在哪一个体育项目上获得的（ ）
以甲醇为原料的一款新型手机电池，其反应原理为：2CH3OH＋3X＋4NaOH=2Na2CO3＋6H2O，其中X的化学式为( )。
