Q: A dog's tail can tell you a lot more than you might think. Is it wagging   to the left or is it wagging to the right? "The direction of tail wagging does in fact matter,"said Giorgio Vallortigara,a professor at the University of Trento in Italy. Professor Vallortigara finds that the way the tail is wagging can tell you a lot about a dog's state of mind--whether you're a human or another dog. What's the difference between a left wag and a right wag?Professor Vallortigara and his colleagues have studied 43 dogs of various breeds -- German Shepherds,Beagles,Boxers,Border Collies and some mutts. They find that if a dog wags its tail to the left. it's feeling anxious or nervous. The reason could be an unfamiliar or dangerous situation,an unfamiliar person,or an unfamiliar and possibly threatening dog. But if the tail is wagging to the right,it means the dog is feeling relaxed and approachable. "The tail is a very important signal,"said Thomas Reimchen,a biologist at the University of Victoria in British Columbia, Canada. "There is a lot of visual information that dogs use when communicating with each other. " How did the scientists figure all this information out? They had the dogs in their study watch videotapes of other dogs. When the dog on the tape wagged its tail to the right,they say the other dogs remained calm and cool. But when the dog on the tape wagged its tail to the left,the other dogs got anxious. The researchers are still not exactly sure if the direction of tail wagging is something the dog does consciously. They suspect that it might be something the dog does without even thinking about it -- kind of like when you get goose bumps if something scares or startles you. They plan to do more research to get more information about what dogs are thinking and feeling while they're wagging. As Reimchen said,"I'm not going to be surprised if we find all sorts of really interesting processes that nobody has ever seen before. " How does the passage mainly develop? A) By asking and analyzing questions B) By making comparisons C) By following the order of time D) By providing examples
A: A


Q: Madame Tussaud's wax   Museum, London Madame Tussaud's Wax Museum was first set up in Paris in 1770, moved to London in 1802 and moved to its present address in 1884. The collection of famous people of the past and present is kept up to date. Visitors will see Henry VIII and his six wives, the present Queen and royal family, leading figures of the French Revolution and so on. In 1993 a new part was added to it, the "Spirit of London", a journey through London from medieval times   to the present day. Address: Madame Tussaud's Marylebone Road London NWI 5LR United Kingdom Hours: It is open from 9:30 to 17:30 from Monday to Sunday Always closed on Christmas Day (December 25) Cost: Adult: PS25.00. Child 16 & under: PS21.00. Child 4 & under: FREE. Tips: Extra money applies to   some peak periods. Group rates apply to 10 or more persons. Combined tickets for Madame Tussaud's and the London Planetariur   are available at reduced rate. Opening hours may change throughout the year. Directions: By Tube  : Madame Tussaud's is a two-minute walk from Baker Street tube station By Train: Marvlebone Station is within 10 minutes walking distance of Madame Tussaud's By Bus: The following bus numbers travel to Madame Tussaud's: 13, 18, 27, 30, 74, 82, 113, 139 and 274. From the "Spirit of London", visitors can learn   _  . A) the history of London B) the tube of London C) what London people wore before and what they wear today D) the famous people in London's development
A: A


Q: A long-term American study shows the importance of early education for poor children. The study is known as the Abecedarian Project. It involved  more than one-hundred young children from poor families in North Carolina. Half of the children attended an all-day program at a high-quality childcare center. The center offered educational, health and social programs. Children took part in games and activities to increase their thinking and language skills and social and emotional development. The program also included health foods for the children The children attended the program from when they were a few weeks old until the age of five years. The other group of children did not attend the childcare center. After the age of five, both groups attended public school. Researchers compared the two groups of children. When they were babies, both groups had similar results in tests for mental and physical skills. However, from the age of eighteen months, the children in the educational child care program did much better in tests.  The researchers tested the children again when they were twelve and fifteen years old. The tests found that the children who had been in the childcare center continued to have higher average test results. These children did much better on tests of reading and mathematics.  A few years ago, organizers of the Abecedarian Project tested the students again. At the time, each student was twenty-one years old. They were tested for thinking and educational ability, employment, parenting and social skills. The researchers found that the young adults who had the early education still did better in reading and mathematics tests. They were more than two times as likely to be attending college or to have completed college. In addition, the children who received early education were older on average, when their first child was born.  The study offers more evidence that learning during the first months and years of life is important for all later development.  The researchers of the Abecedarian Project... Those who had been in the child-care center  _   compared with those who hadn't. A) have no parenting or social skills B) have their children at later ages C) are poorer at reading and mathematics D) get more help from other people
A: B


Q: "Colour" and "color","favourite" and "favorite"... Have you ever wondered why Americans spell those words without a "u"? Is it because they are lazy? Of course not. In fact,the difference in spelling was created by Noah Webster (1758-1843). He is a teacher who reformed English to make American identity stronger. Linguists   celebrated his 250th birthday on October 16. After the Revolutionary War (1775~ 1783),Webster believed that Americans should have their own dictionary,rather than rely on British versions  . He dropped the British "u" in some words. And he changed "centre" into "center" for children to learn English by spelling words more like they sounded. Webster wasn't shy about expressing his opinions. In defining   preposterous (unreasonable),he wrote: "A republican government in the hands of females is preposterous." Webster spent 28 years on the project before completing the 70,000-word dictionary in 1828 with his American-style spellings. He also added local words. His dictionary was widely used in schools. Linguists believed it helped a new nation achieve unity and cultural independence at a time when most were focused on political freedom. "He was the shaper of our language and the shaper of American identity,"said Joshua Kendall,who is working on a biography   about Webster. "He at last bonded  us through our language." Why did Noah Webster create these differences in his dictionary? A) Because he wanted to make English simple and easy. B) Because he wanted to show that the USA is stronger than the UK. C) Because he wanted to achieve political freedom. D) Because he wanted American English to have its own characteristics.

A: D