The Internet is not perfect. There are many problems with it. The Internet is not organized. There is no one in charge of the Internet. It is sometimes difficult to find what you are looking for. It is also easy to get the wrong information on the "Net". Some businessmen cheat people on the Internet. Internet thieves can steal credit card numbers. Some advertisers send spam to e-mail boxes. E-mail boxes are often filled with these unwanted advertisements. Illegal businesses can operate on the Internet. These businesses sell X-rated materials, cigarettes and alcohol to teenagers. The Internet has websites with information about making bombs, breaking the law and terrorism. Criminals can fool people, especially children, in chat rooms. They can spread poisonous information and attack new members. The Internet is the greatest advance in communication since human emerged. But it can also like a dark alley in a dangerous part of town. Parents need to set parental controls on their children when they use the Internet. This will keep some of the bad material away from their children. The Internet can be dangerous to computers, too. Some people who have evil intentions enjoy causing problems for other people they don't even know. They create computer viruses. A computer can get virus by downloading a program that has a virus in it. Some virus come by e-mail. A virus can destroy the data a person has saved in computer files. A virus can cause a computer to crash. A virus can also reproduce itself! It can send copies of itself to everyone on a person's e-mail address list. Then these people's will have the same problems and can't work normally! Why can illegal businesses operate on the Internet? A) Because some people like to buy banned products on the Internet. B) Because there is no one in charge of the Internet. C) Because X-rated materials, cigarettes, alcohol and so on can be sold well on the Internet. D) Because people who operate businesses on the Internet are criminals.
B
Scientists discovered 163 new species in Southeast Asia's Greater Mekong region last year,but all are at risk of extinction due to climate change,the WWF said in a report released Friday. The newly discovered creatures include a birdeating frog with fangs ,a bird that would rather walk than fly and a gecko whose alien appearance inspired the report's title of "Close Encounters",the conservation group said. The report was released ahead of major UN talks on climate change in Bangkok next week,which are being held before a makeorbreak summit in Copenhagen this December. "Some species will be able to adapt to climate change,and many will not,potentially resulting in massive extinction," Stuart Chapman,director of the WWF Greater Mekong program,said in the report."Rare and endangered species like those newly discovered are especially vulnerable because climate change will further shrink their already restricted habitats," he said. "The new discoveries in 2010 include 100 plants,28 fish,18 reptiles,14 amphibians,2 mammals and a bird,"the WWF report said.The area spans Cambodia,Laos,Myanmar,Thailand,Vietnam and China's Yunnan Province. "Among the new species is the birdeating fanged frog,which remains hidden in a protected area of Thailand despite the fact that scientists are studying there for 40 years," the report said. The tigerstriped pit viper was discovered accidentally on an island off the coast of Vietnam when a scientist was looking for a lizard and his son pointed out that his hand was on a rock right next to the snake's fangs."We caught the snake and the gecko and they both proved to be new species," researcher Lee Grismer of La Sierra University in California was quoted as saying in the report.The leopard gecko,found on another Vietnamese island,has the coloring of a leopard and bizarre orange,catlike eyes and thin legs. The Greater Mekong region has proved a rich area for scientists.The WWF said in December 2010 that it had found 1,068 new species there between 1997 and 2009. What does the passage mainly tell us? A) The Greater Mekong region is a rich area for scientists. B) Many rare species remain to be discovered in the Mekong region. C) Scientists have discovered many new species in the Mekong region. D) Climate change threatens Mekong new species.
D
Q: It was on the early afternoon of a mid-October day in 2012. Bismark Mensah, who came to America several months ago, was collecting carts outside a Walmart in Federal Way. It was a part-time job for him. He earned $9.05 an hour in charge of getting carts out of the parking lot. He was used to finding stuff in carts that customers had somehow forgotten -- keys, credit cards, wallets. And he turned them into a customer service. But a particular item stood out. It was a white envelope with a clear window in the middle, and there was a lot of cash in it, around $20,000. Mensah turned them into customer services. Because of what he did that afternoon, Mensah is now the winner of Walmart's national 2013 "Integrity in Action Award". Bismark Mensah says that since the story ran, he has become the model the youth in Ghana (his native country). He is now employed full-time at the Federal Way Walmart, earning $10.95 an hour, up from the $9.05 an hour he earned working part-time. Mensah, 33, no longer collects carts and such. He is in the backroom, dealing with inventory . "I want to learn everything about operating a store like Walmart store," he says. He plans to return to Ghana to run some shops owned by his family. He also plans to go to college and earn a degree in business administration. What does Mensah do in Walmart now? A) Collect carts. B) Deal with inventory. C) Checks out the groceries. D) Ensures Walmart's security.
A: B
Q: How many hours does it take to be fluent in English? There are plenty of people in the UK for whom even basic English is a problem. According to the survey, 726,000 people in England and Wales said they could not speak English well, and another 138,000 said they did not speak it at all. Ling, 40,who arrived five years ago from China, found it difficult to learn English. " When I came here l was pregnant and so I was at home for the next three years. It took me longer to learn as l was very busy with the children." Eventually she was able to begin taking classes and now speaks good conversational English. But even with classes, it can be a long process to pick up the language. Age is the most important factor in language acquisition, says Mila Vulchanova, professor of linguistics at the Norwegian University of Science and Technology. "There is a sensitive period in language learning, which is biologically determined, with an onset at birth and a decline around puberty. So the younger the immigrant, the better. Since this decline is only gradual, teenagers are at an advantage over adults." he says. There are a number of systems for grading English. The government expects immigrants to reach "ESOL Entry 3" or "B1 level" in Scotland, before they can be granted citizenship. It's equivalent to being able to hold a confident conversation and-it might take 360 hours of study to achieve. George Osborne said in June following the spending review that welfare claimants who don't speak English will have their benefits cut if they fail to attend language courses. Huan Japes, deputy chief executive of English UK, a trade body for language colleges, says a rule of thumb is 360 hours-120 hours for each of three stages-to get to the standard the government expects benefit claimants to reach. But many of the people who attend courses are visiting students rather than people settling in the UK. Immigrants tend to have very varied levels of education. " Using 120 hours( for each stage of English fluency) is a rather traditional... The author develops the passage mainly by _ . A) using survey data B) using experts' views C) giving examples of English learners D) listing the facts of English learning
A: B