Read the following article and select the best answer. Article: A new American report says water-related problems will likely increase tensions around the world in the next ten years. These problems include water shortages, poor water quality and floods. The problems will increase the risk of failure of governments. However, countries are unlikely to go to war over water. But the real question is that some governments may use water as a weapon to pressure others ten years later. The report looks at possible effects of water problems on the United States national security interests over the next thirty years. It says the areas that will be most affected by water problems are North Africa, the Middle East and South Asia. The United States Secretary of State Hillary Clinton says, "Reliable water resources are essential for feeding the hungry, running industries and creating energy. Certainly they are central when we think about how climate changes will affect future generations." The report also predicts an increased demand for American assistance and expert help to solve those problems. That demand for help could create opportunities for leadership and influence. Water shortages, poor water quality, and floods are unlikely to result in state failure. But these could combine with poverty, social tensions, environmental problems, poor leadership and weak governments to produce social disorder. And that combination could cause state failure. The report predicts that from now through 2040 water shortages and pollution probably will harm the economic performance of important trading partners. During the next ten years the loss of groundwater supplies in some agricultural areas will create a risk to national and global food markets. These shortages will be a result of poor management. Agriculture uses about seventy percent of the world's freshwater. The report says technology that reduces the amount of water needed to grow crops will offer the best way to fight against water shortages. Question: What is the real concern of the report? - People would suffer from more floods. - Water would be used as a kind of weapon. - Water problems would lead to war in the future. - Floods would make water shortages more serious.
Water would be used as a kind of weapon.

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Read the following article and select the best answer. Article: The next time you try for a high-ranking post, you could let your possible boss listen to a recommending phone call "made" by US President George W Bush or British Prime Minister Tony Blair. Of course, neither of them could really do that for you-you would just "borrow" their voices. AT & T labs will start selling speech software that it says is so good at reproducing the sounds of a human voice that it can recreate voices and even bring the voices of long-dead famous people back to life. The software, which turns printed text into speech, makes it possible for a company to use recordings of a person's voice to say things that the person never actually said. Possible customers for the software, which is priced in the thousands of dollars, include telephone call centers, companies that make software that reads digital files aloud, and makers of automated voice devices . The advances raise several problems. Who, for example, owns the rights to a famous person's voice? (Some experts even believe that new contracts will be drawn that include voice-licensing clauses.) And although scientists say the technology is not yet good enough to commit fraud , would the synthesized voices at last be able to trick people into thinking that they were getting phone calls or digital audio recordings from people they know? Even Mr Fruchterman, one of AT & T lab's possible first customers, said he wondered what the new technology might bring. "Just like you can't trust a photograph anymore." He said, "you won't be able to trust a voice either." Question: It the speech software were widely used, _ . - people would no longer believe each other - it would not be necessary to go for a speech by a famous person - no radio or TV broadcasters would be needed - recording of a voice alone would not be taken as a proof in the court
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recording of a voice alone would not be taken as a proof in the court

Question: Read the following article and select the best answer. Article: Nick Vujicic Imagine getting through your busy day without hands or legs.Picture your life without the ability to walk,care for your basic needs,or even hug those you love.Meet Nicholas Vujicic.Without any medical explanation or warning,Nick was born in 1982inMelbourne,Australia,without arms and legs. The early days were difficult.Throughout his childhood,Nick not only dealt with the typical challenges of school and adolescence,but he also struggled with depression and loneliness.Nick constantly wondered why he was different from all the other kids.He questioned the purpose of life. After experiencing many difficulties,Vujicic eventually began to realize that his experiences were inspiring to many people and began to be thankful for being alive.A key turning point in his life was when his mother showed him a newspaper article about a man dealing with a severe disability.This led him to realise he was not the only one with major struggles.When he was seventeen,he started to give talks.He has traveled around the world,sharing his story with millions,sometimes in stadiums full of people,speaking to a range of various groups such as students,teachers,young people,business professionals and so on.He has visited more than 50countries and given thousands of talks.Now he is an encouraging speaker with TED. Vujicic promotes his work through television shows and through his writing.His first book,Life Without Limits:Inspiration for a Ridiculously Good Life,was published by Random House in 2010.He markets a motivational DVD,Life's Greater Purpose,a short documentary filmed in 2005.He markets a DVD for young people titled No Arms,No Legs,No Worries!In March 2008,Vujicic was interviewed by Bob Cummings for the 20/20 American television show. According to Nick,the victory over his struggles,as well as his strength and passion for life today,can be owning to the power of hope.His family,friends and the many people he has met along the journey have inspired him to carry on,as well.Today this energetic young gentle man has... Question: What contributes to Nick's success? - His tough early childhood experience. - His power of hope and everlasting courage. - His publishment of various inspiring books. - His interview by Bob Cummings in March,2008.
Answer:
His power of hope and everlasting courage.