Now,I'll tell you something about the Internet.The Internet is a network of computers.It became popular in the 1990s.Now,we live in the Internet Age.The Internet is very useful.You can get information,do some shopping or talk with people all over the world.You can do all these things in your own room. You can set up your own space on the Internet.We call it a homepage.It's open to anyone in the world.Write your message on your homepage.Soon,you can get answers by email from people around the world. The Internet is also useful when a flood or an earthquake happens somewhere in the world.We can learn about the needs of the people there and send them food and medicine more quickly than before. In the world of the Internet,everyone is equal.Famous writers,artists,and scientists--they are all your friends.A lucky person can even find a message from the president of a country. Some people lose themselves in the world of the Internet.That's really bad.Remember that the world of the Internet is not a real world.Facetoface communication with family,friends,and neighbours is very important.Don't forget that the Internet is only a tool for communication and information. Many people say that the Internet has some problems,but most people agree the Internet still has a wonderful future.For the first time in history,anyone can exchange messages and information immediately with other people. The Internet became popular _ . A) in the 1980s B) in the 1990s C) in the year 2000 D) in the 21st century
B
(Question)
Right in the heart of America -- in Smith Center, Kansas, to be exact -- high school football coach Roger Barta glanced at his notes as he stood among the sea of players gathered before him. It was 6:30 a.m. on August 18, 2008, the first day of practice for this edition of the Redmen and the 31st opening day of the season for Barta, longtime coach and former math teacher at Smith Center High School. Barta wore a red T-shirt covering a ball-shaped belly . Barta began with basic instructions: Drink lots of water. Fine advice. But what Coach Barta laid out next was the essential game plan -- life lessons that many people consider his greatest strength. "Someone here is the best, and someone is the worst," he said. "It's time to forget about that. Let's respect each other. Thus, we'll like each other and then love each other. That's when, together, we'll become champions." He paused for a moment. When he continued, he spoke with even more fervor to the 56 young men sitting before him. "One more thing, guys. We don't talk about winning and losing. We talk about getting a little better every day, about being the best we can be, about being a team. And when we do that, winning and losing take care of themselves." Over the next four months, the Redman went on to beat each competitor, winning another perfect season. As their coach, Barta has created a 289-58 record, eight Kansas state championships, and 67 victories. In high school football, it's the longest win in the nation. Through it all, Coach Barta kept his word: Not once did he ever say that a game was do-or-die. "None of this is really about football," he had explained to me back in 2007, convincingly enough to force me to move to Smith Center from New York City with my wife, Mary, and three-year-old son, Jack, so I could write about him for a year. "What I hope we're doing is sending kids into life who know that every day means something." In Barta's opinion, which is important for a player? A) Winning the game. B) Learning from failure. C) Trying his or her best. D) Caring about the result.
(Answer)
C
Ques: Sabina Castelfrancol Rome October 16, 2011---The U.N. World Food program says there are growing concerns over food insecurity in the developing world. Some of those concerns are discussed in a report to agree with the anniversary Sunday of World Food Day. The theme for World Food Day 2011 is "Food prices-From Crisis to Stability". A ceremony to mark World Food Day will be held Monday at the headquarters of the U.N. Food and Agriculture Organization in Rome. Rising food prices, weather emergencies and political instability are deepening the struggle of families trying to provide for their households in many developing nations. This year's "State of Food In security in the World" report, published last week, focuses on the impact of food price _ confirming that high, unpredictable prices are likely to continue. The report highlighted how poor consumers, small farmers and countries dependent on imports, especially in Africa, have been deeply affected by the food and economic crises. Gregory Barrow is with the World Food Program in Rome. "if you look at the places where World Food program works particularly in developing countries, you see populations of people who might be spending 60,70,80percent of their salaries on purchasing food for their families". Barrow added that if prices become changeful and generally start rising, even by a small amount, it means that many of these people are going to struggle to put nutritious food on their tables. The report also showed that even short-term fluctuations in prices can have a long-term effect on development, and that cutting back on nutritious food in the first 1.000 days of a child's life can affect mental and physical development and finally, future earning capacity . The United Nations has programs in place aimed at reducing the number of hungry people by one-half by 2015.But most observers agree this target is unlikely to be reached. The U.N. World Food program aims to _ . A) hold a ceremony to mark World Food Day. B) provide food for developing nations C) show concerns over food insecurity in the developing world D) introduce the U.N. Food and Agriculture Organization in Rome
Ans: C
Ques:The place is England. The year is 1928. One of the founding theorists of quantum mechanics , Paul Dirac, is scratching his head because solutions to his equations have _ unexpected results. For the solutions to make sense, he reasons, there must be a particle that has the mass of an electron but the opposite charge. At the time, such a thing was not known to exist. Several years pass before American physicist Carl Anderson observes a "positive" electron, or positron that confirms Dirac's prediction. Antimatter , as the name implies, can be described as the opposite of ordinary matter. Every particle in the universe has characteristics such as mass and charge. With antimatter, the mass remains constant, but the sign of the charge is reversed. All particles have an antimatter counterpart , even the chargeless neutron . Unlike matter, antimatter is not common. Unless you're in the upper atmosphere, or inside a particle accelerator, you're not going to come across it. "Antimatter was not always so rare," Stephane Coutu, Penn State particle physicist says. There was a time when it was as prevalent as matter itself. "Right after the Big Bang ," Coutu explains, "we believe there must have been exactly the same amounts of matter and antimatter...and yet owing to some small asymmetry in the laws of particle interactions, all of the antimatter and most of the matter in the early universe was annihilated . We are left today with the resulting matter-dominated universe." Science fiction is rife with tales of high-energy particle annihilation, and indeed, antimatter weapons have appeared in current bestselling novels. This is unrealistic, Coutu says. "[It] would be very impractical owing to very great difficulties in producing and maintaining significant amounts of antimatter." Technology that uses the properties of antimatter is actually feasible outside of science fiction, however. Positron emission tomography (PET) is a medical technique that can be used to detect cancer, measure blood flow and detect coronary... According to Coutu, _ . A) It is unrealistic to apply antimatter to medical care B) antimatter weapon is threatening the safety of human beings C) antimatter is not always so rare around us D) It's not easy to produce and maintain large quantities of antimatter

Ans:
D