单选题A Sunshade for the Planet Even with the best will in the world, reducing our carbon emissions is not going to prevent global warming. It has become clear that even if we take the most strong measures to control emissions, the uncertainties in our climate models still leave open the possibility of extreme warming and rises in sea level. At the same time, resistance by governments and special interest groups makes it quite possible that the actions suggested by climate scientists might not be implemented soon enough. Fortunately, if the worst comes to the worst, scientists still have a few tricks up their sleeves. For the most part they have strongly resisted discussing these options for fear of inviting a sense of complacency that might thwart efforts to tackle the root of the problem. Until now, that is. A growing number of researchers are taking a fresh look at large-scale "geoengineering" projects that might be used to counteract global warming. "I use the analogy of methadone," says Stephen Schneider, a climate researcher at Stanford University in California who was among the first to draw attention to global warming. "If you have a heroin addict, the correct treatment is hospitalization, and a long rehab. But if they absolutely refuse, methadone is better than heroin." Basically the idea is to apply "sunscreen" to the whole planet. One astronomer has come up with a radical plan to cool Earth; launch trillions of feather-light discs into space, where they would form a vast cloud that would block the sun's rays. It's controversial, but recent studies suggest there are ways to deflect just enough of the sunlight reaching the Earth's surface to counteract the warming produced by the greenhouse effect. Global climate models show that blocking just 1.8 percent of the incident energy in the sun's rays would cancel out the warming effects produced by a doubling of greenhouse gases in the atmosphere. That could be crucial, because even the most severe emissions-control measures being proposed would leave us with a doubling of carbon dioxide by the end of this century, and that would last for at least a century more.

单选题Norman Blamey is an artist of deep convictions. A. statements B. beliefs C. suggestions D. claims

单选题Please do not hesitate to call me if I can be of further assistance.

单选题Many scientists have been probing psychological problems, A. solving B. exploring C. settling D. handling

单选题Paragraph 5_____

单选题Jean has determined not to attend the party.A. triedB. promisedC. decidedD. attempted

单选题She was {{U}}close{{/U}} to success.

单选题阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}} The Enormous Egg{{/B}} Dr. Ziemer arrived while we were still staring at the thing in the nest. He jumped out his car and came running out to in the backyard. He was wearing a red coat over his pajamas, and he looked pretty excited. He ran up to the nest and looked in. His eyes opened up wide and he knelt down on the ground and stared and stared. After long while he said softly, "That's it. By George, that's just what it is. "Then he stared for another long time and finally he shook his head and said, "It can't be true, but there it is." He got up off his knees and looked around at us. His eyes were just sparking, he was so excited. He put his hand on my shoulder, and I could feel he was quivering. "An amazing thing's happened, "he said, in a kind of whisper." I don't know how to account for it. It must be some sort of freak biological mix-up that might happen once a thousand years. " "But what is it?" I asked. Dr. Ziemer turned and pointed a trembling finger at the nest. "Believe it or not, you people have hatched out a dinosaur. (恐龙)" We just looked at him. "Sounds incredible, I know," he said, "and I can't explain it, but there it is. I've seen too many Triceratops (三角恐龙)skulls to be mistaken about this one. " "But—but how could it be a dinosaur?" Pop asked. "Goodness gracious!" Morn spluttered. "And right here in our backyard. It doesn't seem hardly right. And on a Sunday, too." Cynthia was pretty interested by now, and kept pecking into the nest and making faces, the way she did when Pop brought a bowl of frogs' legs into the kitchen one time. I guess girls just naturally don't like crawly things too much. To tell the truth, I don't either sometimes but this thing that had just hatched out looked kind of cute to me. Maybe that was because I had taken care of the egg so long. I felt as if the little dinosaur was almost one of the family. We stood around for a long while looking at the strange new thing on the nest, trying to let the idea soak in that we had a dinosaur. After Dr. Ziemer calmed down a little he and Pop tightened up the chicken wire to make sure the little animal wasn't going to crawl out. Dr. Ziemer watched if perhaps she ought not to be taken out before she went out of her mind. Pop figured that it might be a good idea and he picked her up and cut her outside the pen. She acted a little dazed at first, but pretty soon she followed the other hens and began pen. She acted a little dazed at first, but pretty soon she followed the other hens and began scratching for worms like the rest of them.

单选题Mary called me up very late last night.A. shouted at meB. visited meC. telephoned meD. waked me

单选题Everything happened to be messy with the dangerous plan.A. in orderB. out of orderC. in placeD. out of breath

单选题The beach is an ideal place for a weekend. A. seaside B. camp C. mountain D. resort area

单选题Foreign money can be {{U}}converted{{/U}} into the local currency at this bank.

单选题The senator agreed that his support of the measure would jeopardize his chance for reelection.

单选题Native Chinese myths and legends (神话传说) often depict the god as a smart and brave hero.A. funnyB. friendlyC. cleverD. suspicious

单选题We can no longer {{U}}put up with{{/U}} his actions. A. bear B. accept C. support D. oppose

单选题Going Back to Its Birthplace No sporting event takes hold of the world"s attention and imagination like the Olympic Games. The football World Cup fascinates fans in Europe and South America; baseball"s World Series is required viewing in North America; and the World Table Tennis Championships attracts the most interest in Asia. But the Olympics belong to the whole world. Now, after travelling to 17 countries over 108 years, the summer Games are returning to Athens, the place where the first modern Olympics was held. Participation in the Games is looked on not only as an achievement, but also as an honour. The 16 days between August 13 and 29 will. see a record 202 countries compete, up from Sydney"s 199. Afghanistan is back, having been banned from Sydney because the Taliban government didn"t let women do sports. There is also a place for newcomers East Timor and Kiribati. A total of 10,500 athletes will compete in 28 sports, watched by 5.3 million ticket-paying viewers as well as a television audience of 4 billion. Athens is to use its rich history and culture to make the Olympics as special as possible. The Games will open with cycling events which start in front of the Parthenon and Acropolis monuments. The final event will be a historic men"s marathon following the original route run by Phidippides in 490 BC to bring news of victory over the Persians. The ancient stadium at Olympia, first used for the Games nearly three centuries ago, will stage the shot put competitions. And the Panathenian Stadium, where the first modern Olympics was held, is to host the archery (射箭) events. If the well-known ancient sites deliver a great sense of history to the Games, the 39 new venues add a modern touch to the city of Athens. The main Olympic stadium, with a giant glass and steel roof, is the landmark (标志) building of the Olympics. "We believe that we will organize a "magical" Games," said Athens 2004 President Gianna Angelopoulos-Daskalaki. "Our history with the Olympic Games goes back nearly 3,000 years, and Athens 2004 could be the best ever."

单选题Smoking will be banned in all public places here.

单选题The Old Gate In the Middle Ages the vast majority of European cities had walls around them. This was partly for defensive (51) but another factor was the need to keep out anyone regarded as undesirable, like people with contagious (52) . The Old City of London gates were all (53) by the end of the 18th century. The last of London's gates was removed a century ago, but by a (54) of luck, it was never destroyed. This gate is, in (55) fact, not called a gate at all; its name is Temple Bar, and it marked the (56) between the Old City of London and Westminster. In 1878 the Council of London took the Bar down, numbered the stones and put the gate in (57) because its design was (58) it was expensive to (59) and it was blocking the traffic. The Temple Bar Trust was (60) in the 1970's with the intention of returning the gate home. The aim of the Trust is the (61) of the nation's architectural heritage. Transporting the gate will mean physically pulling it (62) , stone by stone, removing and rebuilding it near St Paul's Cathedral. Most of the facade of the gate will probably be (63) , though there is a good (64) that the basic structure will be sound. The hardest (65) of all, however, will be to recreate the statues of the monarchs that once stood on top of the gate.

单选题Help Your Child Become a Reader Encouraging early reading skills can build a path to a lifelong (终身的) love of reading and can help your child get a head start in school. While reading to your child is still the most important thing you can do to build reading skills, there are many techniques that can help. Make reading fun. Play games with your child as you read. Many traditional children's games can be adapted to encourage reading skills. While reading or during play, tell your child, "I spy with my little eye, something that begins with the letter b." Help the child find something on the page or in the room that begins with that letter. For example, "I see a barn." This can also he used to teach beginning letter sounds. "I spy with my little eye. Something that begins with the sounds." Help the child find a word that begins with the "s" sound. In this variation on the popular game, instruct the child that, "Simon says, 'point to something that starts with the letter n.' " The child call then find an object in the room or a body part, such as the nose, that starts with the letter presented. This can also be used to teach beginning sounds. Make a game out of rhyming (押韵) words by making up silly words to rhyme with the child's name or favorite toys. This sets the stage for rhyming real words by showing the child the similarities of sounds. As the child masters making up the words, begin rhyming real words to one another. Tips to raise a successful reader: Put books in places where the child plays. If books are easily accessible, children are more likely to pick them up. Let children "read to you" by looking at pictures. Making up stories to go along with illustrations helps children discover how words relate to pictures. Take books along on trips or even short visits to the doctor's office or grocery store. Have children help you shop. Reading grocery lists and looking for specific items helps build sight vocabulary.

单选题Upon learning that he would leave her, she was