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

属于狭义相对论基本假设的是：在不同的惯性系中，

Ａ．真空中光速不变

Ｂ．时间间隔具有相对性

Ｃ．物体的质量不变

Ｄ．物体的能量与质量成正比

A. needs B. activities C. judgments D. habits Ks5u

B

Foreign drivers will have a pay on-the-spot fines of up to ￡900 for breaking the traffic law to be carried our next month.

If they do not have enough cash or a working credit card, their vehicles will clamped（扣留）until they pay and they will face an additional fee of &80 for getting back their vehicles .

The law will also apply to British citizens ,The fines will be dcgcribed officially as “deposits” when the traffic law take effect ,takes effect ,because the money would be returned if the driver went to court and was found not guilty ,In practice, very few foreign drives are likely to return to Britain to deal with their eases.

Foreign drivers are rarely charged because police cannot take action against them if they fail to appear in court, Instead, officers often merely give warnings.

Three million foreign-registered vehicles enter Britain each year . Polish vehicles s make up 36 percent, French vehicles 10 percent and German vehicles 9 percent.

Foreign vehicles are 30 percent more likely tope in a crash than British-registered vehicles .The number of crashes caused by foreign vehicles rose by 47 percent between 2003 and 2008 .there were almost 400 deaths and serious injuries and 3,000 slight injuries from accidents caused by foreign vehicles in 2008.

The new law is partly intended to settle the problem of foreign lorry drivers ignoring limits on weight and hours at the wheel .Foreign lorries are throe times more likely to be in a crash than British Lorries. Recent spot checks found that three quarters of Lorries that failed safety teats were registered overseas.

The standard deposit for a careless driving offence —such as driving too close to the vehicle in front or reading a map at the wheel—will be ￡300. Deposits for speeding offences and using mobile phones will be ￡60. Foreign drivers will not get points as punishment added to their licenses, while British drivers will.

60. The first paragraph serves as a（n）

A. explanation B. introduction C. comment D. background.

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）

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