I'm taking a test and have to guess the right answer to the question after the article. Article: The world's oceans are slowly getting more acidic, say scientists. The researchers from California say the change is taking place in response to higher levels of carbon dioxide in the atmosphere. The lowering of the waters' pH value is not great at the moment but could pose a serious threat to current marine life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of fossil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century. But these researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. "This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira. "And we predict amounts of future acidity will exceed anything we have seen over the last several hundred million years, let alone perhaps after rare catastrophic events such as asteroid impacts ." If carbon dioxide release continues unabated , ocean pH could be reduced by as much as 0.77 units, the authors warn. It is not ly clear what that means for marine life, however. Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean lifeforms may be more sensitive to pH changes. Coral reefs and other organisms whose skeletons or shells contain calcium carbonate may be particularly affected, the team speculate. They could find it much more difficult to build these structures in water with a lower pH. In recent years some people have suggested deliberately storing carbon dioxide from power stations in the deep ocean as a way of curbing global warming. But Dr Caldeira said that such a strategy should now be... Question: If the water's acidity level keeps rising, _ . Options: A: organisms living near the surface are more sensitive to pH changes B: ocean life whose structures contain calcium carbonate may be affected C: the waters' pH value will become higher and higher D: some disastrous events will occur more often than before
B

I'm taking a test and have to guess the right answer to the question after the article. Article: Every now and then we hear about an event that has taken place. This information helps us prepare ourselves for any problem in the future. Current affairs serve different purposes for different people. Theses days, the importance of current affairs has risen. Most people focus on certain areas of information according to their needs and interests. There are certain areas like science and technology, which attract only a special kind of crowd, and thus have a lesser audience compared to fields like the entertainment industry. Science and technology are completely ignored by a common man, unless he or she happens to be "a techno-freak ". Yes, this is the word given to people who show interest in current affairs related to science and technology. However, they are the ones who have much more knowledge of the current world. Why is it so? Mainly because today's world is driven by science and technology. It is the techno-freaks that cause the development in science and technology, and thanks to them you can see a miracle of new inventions. The old way of living has been replaced by the high-tech modern way of living. It will be a world of robots in the near future. If somebody decides not to get to know about current affairs related to science and technology, he or she will be separated from the real world. We must stay abreast with the new inventions so that we can predict the future. For example, if you know the current conditions of science and technology of 2012 well, you will better understand what will take place in 2012. Therefore, you must gain enough knowledge on current affairs in science and technology. There are the Internet, newspapers and magazines to provide you with all the information of science and technology. Question: What field attracts more people in the author's opinion? Options: A: Science and technology. B: Robots and space travels. C: Entertainment. D: Information Technology.
C

I'm taking a test and have to guess the right answer to the question after the article. Article: Oprah Winfrey, the American media queen, is undoubtedly one of the most successful women in the world. She's the host and owner ofThe Oprah Winfrey Show, which continuingly wins high ratings, and the founder of Harpo Productions, which produces her television shows and movies. Certainly Winfrey feels right these days. Early on, however, _ . She stayed with her grandmother after birth and moved to Wisconsin to live with her mother at 6, and hence began the most difficult period in her life. They lived in the low-income community and her mother showed her less attention. Her classmates came from families with more money and she couldn't participate with them in a lot of activities. The young girl had held too much anger and pain inside and she rebelled. She repeatedly ran away from home and got into various troubles. During that time, she turned heavy smoker, became addicted to alcohol and drug and was sent to a juvenile detention home at the age of 13. Fed up, Oprah's mother sent her to Tennessee to live with her father. To a large extent, this man saved Oprah's life and helped pave the way for her success. She received a full scholarship to Tennessee State University where she majored in Speech and Performing Arts. After graduation, she landed a job as a news reader at a television station, where she did not do well at first. But she did not give up; instead, she worked harder. She put in long hours and prepared carefully before going on camera. Her hard work paid off: she moved up swiftly to news reader and reporter in Baltimore and was offered her own talk show in 1977. From then on, her career began to take off. Some people are handed money at birth and are nurtured into success; other people create their own success, and Oprah Winfrey definitely belongs to the latter. "There is no such thing as failure in my life," she concluded, "Life is a marathon. I think the ones who survive in life do it by hammering at it one day at a time." Well, by doing so, she won the game. Question: Which of the following is NOT the cause of her bad behaviors as a teenager? Options: A: Her mother had no time to take good care of her. B: Her classmates' families were very rich. C: She couldn't take part in activities with her classmates. D: She had too much anger and pain inside.
B