单选题The leaves have been swept into huge (heaps).

单选题What happened when honey badgers got used to humans around them?

单选题The Grass Is Greener at Harvard There is an underground revolution spreading across Harvard University this fall. It's occurring under the soil and involves fungi(真菌) ,bacteria, microbes(微生物) and roots, which are now fed with compost tea (混合肥料) rather than pesticides and synthetic nitrogen (合成氮). The results have so surprised university administrators that what started as a one - acre pilot project in Harvard Yard has spread organic practices through 25 acres on the campus. "Our goal is to be fully organic on the 80 acres that we maintain within the next two years. " said Wayne Carbone, Harvard's manager of landscape services. Harvard's president, Drew Gilpin Faust, who last year started a university effort to reduce greenhouse gases by 30 percent by 2016, has adopted the organic program at Elmwood, the Dresident's house on Brattle Street. Dr. Faust became interested by the effort last spring when she saw a display that the Harvard Yard Soils Restoration Project had set up outside her office. As the project proceeded, "I saw the impact, I was really excited," Dr. Faust said. "I think it's an integral part of the larger effort to advance sustainability at Harvard. " The organically grown grass on campus is now green from the microbes that feed the soil, eliminating the use of synthetic nitmgen, the base of most commercial fertilizers. No herbicides(除草剂)or pesticides are used, either. Roots reach eight inches into soil that was once so compacted the trees planted in it were dying. "At commencement(毕业典礼), rain or shine, we have 10,000 people here," Mr. Carbone said, gazing at the expanse where chairs are traditionally set in front of Memorial Church. "We get about 6,000 to 8,000 people here every day. " But the microbial activity beneath their feet has now aerated(使生气勃勃) the soil. Tree roots can breathe because they are absorbing nutrients and water. Newly planted oaks outside Mass Hall, a few steps from Harvard Square, are thriving. Soil tests show the Dresence not only of beneficial bacteria and fungi but also of the micro - organisms that feed on them, recycling nitrogen back into the soil. This dog- eat- dog(竞争激烈的) world underground also retains moisture. Thanks to these efforts, the university has reduced the use of irrigation(灌溉) by 30 percent, according to Mr. Carbone, thus saving two million gallons of water a year. And the 40 - year - old orchards at Elmwood, which have been treated with compost tea, are recovering from leaf spot(叶斑病) and apple scab(疮痂病).

单选题There is always excitement at the Olympic Games when an athlete {{U}}breaks{{/U}} a previous record of performance. A. beats B. matches C. maintains D. announces

单选题I was astonished at the news of his escape.

单选题Formal Education and Economic Growth The relationship between formal education and economic growth in poor countries is widely misunderstood by economists and politicians alike progress in both area is undoubtedly necessary for the social, political and intellectual development of these and all other societies; however, the conventional view that education should be one of the very highest priorities for promoting rapid economic development in poor countries is wrong. We are fortunate that is it, because new educational systems there and putting enough people through them to improve economic performance would require two or three generations. The findings of a research institution have consistently shown that workers in all countries can be trained on the job to achieve radical higher productivity and, as a result, radically higher standards of living. Ironically, the first evidence for this idea appeared in the United States. Not long ago, with the country entering a recessing and Japan at its pre-bubble peak. The U. S. workforce was derided as poorly educated and one of primary cause of the poor U. S. economic performance. Japan was, and remains, the global leader in automotive assembly productivity. Yet the research revealed that the U. S. factories of Honda Nissan, and Toyota achieved about 95 percent of the productivity of Japanese, because of the training that U. S. workers received on the job. More recently, while examing housing construction, the researchers discovered that illiterate, non-English speaking Mexican workers in Houston, Texas, consistently met best-practice labor productivity standards despite the complexity of the building industry"s work. What is the real relationship between education and economic development? We have to suspect that continuing economic growth promotes the development of education even when governments don"t force it. After all, that"s how education got started. When our ancestors were hunters and gatherers 10,000 years ago, they didn"t have time to wonder much about anything besides finding food. Only when humanity began to get its food in a more productive way was there time for other things. As education improved, humanity"s productivity potential, they could in turn afford more education. This increasingly high level of education is probably a necessary, but not a sufficient, condition for the complex political systems required by advanced economic performance. Thus, poor countries might not be able to escape their poverty traps without political changes that may be possible only with broader formal education. A lack of formal education, however, doesn"t constrain the ability of the developing world"s workforce to substantially improve productivity for the forested future. On the contrary, constraints on improving productivity explain why education isn"t developing more quickly there than it is.

单选题The best olive oil is obtained from olives that are harvested just after they ripen.

单选题The government is trying to do something to ______ better understanding between the two countries.A. raiseB. promoteC. riseD. develop

单选题This table is strong and durable .

单选题 A Fire near Waco Six years later, in an about-face, the Federal Bureau of Investigation(FBI) admits that federal agents fired tear gas canisters capable of causing a fire at the Branch Davidian compound near Waco, Texas in 1993. But the official said the firing came several hours before the structure burst into flames, killing 80 people including the Davidians' leader, David Koresh. "In looking into this, we've come across information that shows some canisters that can be deemed pyrotechnic in nature were fired—hours before the fire started,” the official said. “Devices were fired at the bunker, not at the main structure where the Davidians were camped out." The FBI maintains it did not start what turned to be a series of fiery bursts of flames that ended a 51-day standoff between branch members and the federal government. "This doesn't change the bottom line that David Koresh started the fire and the government did not," the official said. "It simple shows that devices that could probably be flammable were used in the early morning hours. " The law enforcement official said the canisters were fired not at the main structure where the Davidian members were camped out but at the nearby underground hunker. They bounced off the bunker's concrete roof and landed in an open field well, the official said. The canisters were fired at around 6 a. m., and the fire that destroyed the wooden compound started around noon, the official said. The official also added that other tear gas canisters used by agent that day were not flammable or potentially explosive. While Coulson denied the grenades played a role in starting the fire, his statement marked the first time that any U. S. government official has publicly contradicted the government's position that federal agents used nothing on the final day of the siege at Waco that could have sparked the fire that engulfed the compound. The cause of the fiery end is a major focus of an ongoing inquiry by the Texas Rangers into the Waco siege.

单选题Today's movies are emphasizing special effects at the expense of the story.

单选题Seeing the World Centuries Ago If you enjoy looking through travel books by such familiar authors as Arthur Former or Eugene Fodor, it will not surprise you to lean that travel writing has a long and venerable history. Almost from the earliest annals of recorded time individuals have found ready audiences for their accounts of journeys to strange and exotic locales. One of the earliest travel writers, a Greek geographer and historian named Strabo, lived around the time of Christ. Though Strabo is known to have traveled from east of the Black Sea west to Italy and as far south as Ethiopia, he also used details gleaned from other writers to extend and enliven his accounts. His multivolumed work Geography provides the only surviving account of the cities, peoples, customs, and geographical peculiarities of the whole known world of his time. Two other classic travel writers, the Italian Marco Polo and the Moroccan Ibn Battutah, lived in roughly the same time period. Marco Polo traveled to China with his father and uncle in about A. D. 1275 and remained there 16 or 17 years, visiting several other countries during his travels. When Marco returned to Italy he dictated his memoirs, including stories he had heard from others, to a scribe, with the resulting book The million being an instant success. Though difficult to attest to the accuracy of all he says, Marco's book impelled Europeans to begin their great voyages of exploration. Ibn Battutah's interest in travel began on his required Muslim journey to Mecca in 1325, and during his lifetime he journeyed through all the countries where Islam held sway. His travel book the Rihlah is a personalized account of desert journeys, court intrigues, and even the effect of the Black Death in the various lands he visited. In almost 30 years of traveling it is estimated that Ibn Battutah covered more than 75,000 miles.

单选题She was the one in the whole class who was {{U}}eligible{{/U}} to apply for the scholarship.

单选题Which of your two hands do you use most? Very few of us can use both of our hands equally well. Most of us are right - handed. Only about five people out of a hundred are left - handed. New - born babies can grasp objects with either of their hands, but in about two years they usually prefer to use their right hands. How many people are right- handed according to the passage?A. FiveB. Ninety -fiveC. Five percent of themD. Ninety - five percent of them

单选题Don't {{U}}irritate{{/U}} her, she's on a short fuse today.

单选题We {{U}}explored{{/U}} the possibility of closer trade links at the conference,

单选题Individual Americans may think that their values

单选题{{U}}Tempestuous{{/U}} times preceded the declaration of war.

单选题{{U}}Up to now{{/U}}, the work has been easy. A. So B. So long C. So that D. So far

单选题下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断，如果该句提的是正确信息， 请选择A；如果该句提的是错误信息，请选择B；如果该句的信息句的信息文中没有提及，请选择C。 TV Game Shows One of the most fascinating things about television is the size of the audience. A novel can be on the "best seller" lists with a sale of fewer than 100, 000 copies, hut a popular TV show might have 70 million TV viewers. TV can make anything or anyone well-known overnight. This is the principle behind "quiz" or "game" shows, which put ordinary people on TV to play a game for prizes and money. A quiz show can make anyone a star, and it can give away thousands of dollars in the U.S. and almost everyone watched them. Charles Van Doren, an English instructor, became rich and famous after winning money on several shows. He even had a career as a television personality . But one of the losers proved that Charles Van Doren was cheating. It turned out that the show's producers who were pulling the strings, gave the answers to the most popular contestants (竞争者) beforehand . Why? Because if the audience didn't like the person who won the game, they turned the show off. The result of this cheating was a huge scandal. Based on this story, a movie under the title "Quiz Show" is on 40 years later. Charles Van Doren is no longer involved with TV. But game shows are still here, though they aren't taken as seriously. In fact, some of them try to be as ridiculous as possible. There are shows that send strangers on vacation trips together, or that try to cause newly-married couples to fight on TV, or that punish losers by humiliation (羞辱) them. The entertainment now is to see what people will do just to be on TV. People still win money, but the real prize is to be in front of an audience of millions.