中科院大气研究所研究员张仁健课题组与同行合作，对北京地区PM2.5化学组成及来源的季节变化研究发现，北京PM2.5有6个重要来源，其中，汽车尾气和燃煤分别占4%、18%（如图1所示）

（1）用于净化汽车尾气的反应为：

2NO（g）+2CO（g）2CO₂（g）+N₂（g）

已知该反应在570K时的平衡常数为1×10⁵⁹，但反应速率极慢．下列说法正确的是：____ 

A．装有尾气净化装置的汽车排出的气体中不再含有NO或CO

B．提高尾气净化效率的常用方法是升高温度

C．增大压强，上述平衡右移，故实际操作中可通过增压的方式提高其净化效率

D．提高尾气净化效率的最佳途径是使用高效催化剂

（2）CO对人类生存环境的影响很大，CO治理问题属于当今社会的热点问题．镍与CO反应的化学方程式为Ni（s）+4CO（g）⇌Ni（CO）₄（g），镍与CO反应会造成镍催化剂中毒．为防止镍催化剂中毒，工业上常用SO₂除去CO，生成物为S和CO₂．已知相关反应过程的能量变化如图2所示：

则用SO₂除去CO的热化学方程式为____ 

（3）NH₃催化还原氮氧化物（SCR）技术是目前应用最广泛的烟气氮氧化物脱除技术．发生的化学反应是：2NH₃（g）+NO（g）+NO₂（g）2N₂（g）+3H₂O（g）△H＜0．为提高氮氧化物的转化率可采取的措施是（任意填一种）____ 

（4）利用ClO₂ 氧化氮氧化物反应过程如下：

反应Ⅰ的化学方程式是2NO+ClO₂+H₂O═NO₂+HNO₃+2HCl，反应Ⅱ的离子方程式是____ ．若有11.2L N₂生成（标准状况），共消耗NO____  g．

（5）化学在环境保护中起着十分重要的作用，电化学降解法可用于治理水中硝酸盐的污染．该方法可用H₂将NO₃^﹣还原为N₂，25℃时，反应进行10min，溶液的pH由7变为12．其原理如图3所示．

电源负极为____ （填A或B），阴极反应式为____ ；若电解过程中转移了2mol电子，则质子交换膜左侧极室电解液的质量减少____ 克．

应俄罗斯联邦总统普京、坦桑尼亚联合共和国总统基奎特、南非共和国总统祖马、刚果共和国总统萨苏邀请，******于2013年3月22日开始对开始述四国进行国事访问，并出席在南非举行的____________。（   ）

阅读理解

    It was a hot, humid day, and my brother Walt and I had decided that the only way to survive it would be to go swimming in a deep swimming hole across Mr. Blickez's pasture(牧场) and through some woods.

    The only problem with our plan was that this pasture was guarded by a huge, mean Hereford bull. Mr. Blickez had told us that Elsie was the meanest bull in the township, maybe even the county, and we believed him. But the hotter it got, the more we thought there was something fishy about his claim. For one thing, we remembered Mr. Blickez liked telling tall tales; for another, Elsie seemed like an odd name for a bull.

    Finally, I talked Mom into asking permission for us to walk through the pasture, but then another problem surfaced. Mom said she would talk to Mr. Blickez if we would take our cousin Joanie along with us. Joanie was almost two years older than me and a head taller. If her teasing ever got around my grade school, it would be all over for me. In fact, I still had a headache from a quarrel with her that morning. “I'm not going swimming with that dumb girl cousin.” I told my mom.

    “Either Joanie goes with, or you stay home alone,” Mom said in her serious tone. I gave in and we set out. On our way across the pasture, Walt yelled suddenly. Elsie had approached him quietly and was licking(舔) his back.Joanie and I dove under the wire fence, but while I was on the ground I looked up and saw that Elsie wasn't a big mean bull after all. She was going to keep licking my brother's back as long as he stood still.

    We had many good days growing up and visiting our secret swimming hole guarded by the so-called “big mean bull”. And as it turned out, for a girl cousin, Joanie hasn't been too bad. She's been one of my best friends over the years.