E
We already know the fastest, least expensive way to slow climate change: Use less energy. With a little effort, and not much money, most of us could reduce our energy diets by 25 percent or more—doing the Earth a favor while also helping our wallets.
Not long age. My wife, PJ, and I tried a new diet—not to lose a little weight but to answer an annoying question about climate change. Scientists have reported recently that the world is bending up even faster than predicted only a few years ago, and that the consequences could be severe if we don’t keep reducing emissions（排放）of carbon dioxide（CO2）and other greenhouse gases that are trapping heat in our atmosphere.
We decided to try an experiment. For one month we recorded our personal emissions of CO2. . We wanted to see how much we could cut back, so we went on a strict diet. The average US household（家庭）produces about 150 pounds of CO2 a day by doing common-place things like turning on air-conditioning or driving cars. That’s more than twice the European average and almost five times the global average, mostly because Americans drive more and have bigger houses. But how much should we try to reduce?
For an answer, I checked with Tim Flannery, author of The Weather Makers: How Man Is Changing the Climate and What It Means for Life on Earth. In his book, he had challenged readers to make deep cuts in personal emissions to keep the world from reaching extremely important tipping points, such as the melting（融化）of the ice sheets in Greenland or West Antarctica. “To stay below that point, we need to reduce CO2 emissions by 80 percent,” he said.
Good advice, I thought. I’d opened our bedroom windows to let in the wind. We’d gotten so used to keeping our air-conditioning going around the clock. I’d almost forgotten the windows even opened. We should not let this happen again. It’s time for us to change our habits if necessary.
72. Why did the author and his wife try a new diet?
A. To take special kinds of food B. To respond to climate change.
C. To lose weight D. To improve their health
某市人大常委会出台意见，规定了市政府的哪些重大事项需要报人大常委会备案或提请人大常委会审议，并制定了相关程序。该市这一举措
A．缩小了政府的法定权力
B．扩大了人大常委会的决定
C．规定了人大和政府的关系
D．推进了决策的科学化和民主化
俄国作家列夫?托尔斯泰的小说《安娜?卡列尼娜》，生动地描述了俄国贵族的生活。它所属的文学流派是
A．古典主义B．现实主义C．浪漫主义D．现代主义
世界杯足球赛可谓全世界球迷的节日。1990年第十四届世界杯在意大利举办时，一个英国球迷去意大利为自己喜欢的球队助威。他可以
①持欧盟护照进入意大利②在罗马街头观看比赛电视直播
③和苏联球迷交换纪念品④收听北约轰炸南联盟的新闻
A．②③
B．①②
C．③④
D．①④
材料三1924年8月孙中山指出，我们国民党的民生主义，目的就是要把社会上的财源弄到平均，不过办法不同。
——摘编自孙中山《三民主义》
（2）孙中山解决民生问题最初的主张是什么？材料三中所提的“办法”与最初的主张有何主要变化？（2分）结合材料和所学知识，说明这种变化的历史背景。（2分）