When two Bangs meet Sheldon Cooper is a scientific genius on the popular American TV show, The Big Bang Theory (<<>> ). He finally met his match last year: Stephen Hawking. This is not the first time that the scientist has appeared on TV. He has also been on Star Trek (in 1987) and The Simpsons (in 1989). Each time, he played himself. Hawking, 71, is perhaps the world's most famous scientist after Albert Einstein. He has spent his whole life studying the beginning and the end of the universe, including the Big Bang theory. The Big Bang theory explains the early development of the universe. According to the theory, about 13.7 billion years ago everything was all squeezed together in a tiny, tight little ball, and then the ball exploded. The results of that explosion are what we call the universe. Hawking has always tried to make science more popular with people. His book: A Brief History of Time was published in 1988. In the book he shares his understanding of the universe in simple language. The book tries to explain many subjects about the universe to common readers, including the Big Bang, black holes and light cones . Hawking's achievements are even greater if you think about his disability. When he was 21, Hawking caught a bad illness that slowly stopped him from moving or talking. Now he sits on a wheelchair with a computer by his side. To communicate, he moves two fingers to control the computer's mouse. He chooses his words from the screen, which are then spoken by a voice synthesizer . Hawking also believes that there might be aliens in space. However, he believes they are probably very dangerous, so we should not look for them. "I imagine they might exist in very big ships ... having used up all the resources from their home planet," Hawking said in a British documentary named Into the Universe with Stephen Hawking. According to the passage, which of the following about Hawking is TRUE? A) He was born with a disability. B) He uses a computer to communicate. C) He believes aliens are our friends. D) He encourages people to look for aliens.
B
(Question)
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. When Lee Grismer discovered the tigerstriped pit viper,he probably felt _ . A) frightened B) disappointed C) excited D) puzzled
(Answer)
C
Two billion children in the developing world can't receive good education--the key to human development.However,technology offers an answer which allows the poor in developing countries to learn.It is a tool which holds the ability to change the lives of the poor,as it provides a means of learning and communicating. Educational programmes must break away from old systems.New companies such as One Laptop Per Child(OLPC),an organisation founded by MIT Professor Nicholas Negroponte have been active in solving the world's education problem. The Internet has changed the world,allowing educational services to help with the global fight against poverty.Khan Academy is one such service.Like OLPC,it is an organisation founded by Harvard Business School graduate Salman Khan with the task of "providing a world-class education to anyone,anywhere".The education offered includes a large number of math-related topics. The GMAT Pill Review is another company that trains MBA candidates worldwide to prepare for the GMAT exam on both the Quant and Verbal section.Founded by Stanford graduate Zeke Lee,the company offers services which are priced at about 75% less than other similar programmes.It allows students from developing countries who might not be able to afford similar courses to have access to these services. Whether paid or free these services provide educational opportunities to those who would never have had the chance in the past.As a result of the technology revolution ,business schools may see more students from different corners of the world.Because of the Internet,people in developing nations have access to better and more affordable educational opportunities.More and more people will try to improve their lives through educational opportunities outside of their homeland--an idea usually uncommon in developing countries. We can learn from the text that Khan Academy aims to _ . A) help the poor pay for good courses B) provide every child with a computer C) help train MBA candidates D) make everyone receive good education
D