绿色化学的最大特点在于它是在始端就采用预防污染的科学手段，因而过程和终端均为零排放或零污染。绿色化学主张在通过化学转换获取新物质的过程中尽可能充分利用每个原子，具有“原子经济性”，因此它既能够充分利用资源，又能够防止污染。下列化学反应，不符合绿色化学概念的是[ ]
A．消除硫酸厂尾气排放：SO2＋2NH3＋H2O=(NH4)2SO3
B．消除制硝酸工业尾气的氮氧化物污染：NO2＋NO＋2NaOH=2NaNO2＋H2O
C．制CuSO4：Cu＋2H2SO4(浓)
CuSO4＋SO2↑＋2H2O
D．制CuSO4：2Cu＋O2=2CuO； CuO＋H2SO4(稀)=CuSO4＋H2O
答案：C
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Ric kshaw pullers (人力车夫) are some of the poorest people in our city and they work extremely hard. Recently I suffered a(n)__1__injury and had to use a rickshaw puller to take me to the hospital every __2__.I also had to use these trips to get all the stuff (物品) I__3__like medicines, milk, fruit, etc.__4__ I couldn't walk too much.Every day on the way back home, I would__5__the rickshaw puller to stop by the__6__to get me the things I needed. Each day, it would be a__7__rickshaw puller and at first I was worried that they would not__8__to stop or they might ask me for more money for this.However, they__9__me wholeheartedly; without any __10__of the time, effort or money, the rickshaw pullers would__11__set off to get the stuff for me.Often they weren't exactly__12__about what to get so they would come back to me for clarification (说明). Sometimes they would__13__different kinds of stuff with them to show me so I could select__14__and then they would go back to the shop to buy it.They would take care to make sure I got whatever I needed at the right price.They would try to__15__the rickshaws as close to my __16__as possible, so I would have to walk as little as possible to get into my house.One of them didn't even take any extra (额外的) __17__for the time or efforts to help me when I__18__it at the end of the trip. I was so__19__these rickshaw pullers for offering me not only help but care and concern in a genuine (真诚的) way, as if I were their__20__. | ||||
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