Read the following article and select the best answer. Article: Ashok Gadgil has spent the past three decades helping people in need--and he has no plans to stop .On May 2, Gadgil won the$100.000 Lemelson-MIT Award for Global Innovation. Each year,the honor is given to an inventor who has improved the lives of people in developing countries. Gadgil's inventions have helped more than 100 million people around the world. Gadgil is a professor and physicist at the University of California. When he's not teaching,he works to find solutions to global problems such as energy efficiency and water safety. "I chose to focus on problems where my knowledge of science could help,"he said In the 1980s he came up with a program to make energy-efficient light bulbs more affordable for people in developing countries. Then in the 1990s,Gadgil designed his first life--saving invention,UV Waterworks .The device kills deadly disease --carrying germs from drinking water. It costs just one cent to clean five liters of water .Gadgil was inspired to find an inexpensive solution to the clean water crisis after more than 10,000 people in his home country of India died from an outbreak of Bengal cholera,in 1993 The disease is spread through _ food and drinking water .So far,the invention has provided safe drinking water to more than five million people in poor areas. As a professor,Gadgil encourages his students to stay positive about finding solutions to hard problems."Be optimistic when you try a hard problem."he says. "It's when you solve a large problem that you can have a big impact on the world" Question: Gadgil was given Lemelson-MIT Award for _ . - his teaching experience - his new physical research - his vast knowledge - his helpful inventions
his helpful inventions

(Question)
Read the following article and select the best answer. Article: When we talk about stars ,especially women stars ,it seems that they are always young, pretty and own charming body shapes. But recently a Britain's Got Talent star Susan Boyle has changed our views absolutely. Simon Cowell ,one of the judges of the talent show spoke of his shock over Ms Boyle's voice. "This lady camp up ,and I'm thinking, 'This will take five seconds and I can go to have a cup of tea'. That changed when she began to sing I Dreamed to Dream from Les Miserables. She knew we were going to have that reaction and just to see that look of satisfaction on her face through -it was one of my favorite moments," Cowell said. The performance was posted on line and before long, the 47-year-old Scottish woman has been famous all over the world. Speaking from her home in Scotland, Ms Boyle said that she hasn't thought of changing her appearance. She said that her friend helped her with make-up. "I mean, that's hardly a makeover," she added.Ms Boyle also spoke of the reason she first began to explore her vocal talents, "I was kind of slow at school, so getting like singing was a good way of hiding behind that and thus it built my confidence." Question: What can we learn from Susan Boyle's success - It's never too old to learn. - It's easier to succeed at the age of 47. - If you have a dream, try to make it come true! - If you are not able to study well, to be a singer instead.
(Answer)
If you have a dream, try to make it come true!

Ques: Read the following article and select the best answer. Article: With America's national debt continuing to climb, Congress is constantly debating ways to save money. The Dollar Coin Alliance, a lobbying group, says billions could be saved if dollar coins were used instead of paper bills. But many people won't use them. The U.S. government tried to push dollar coins again in recent years, but then suspended almost all production in 2011. American likes paper dollars, but Jim Kolbe, co-chairman of the Dollar Coin Alliance, thinks switching to the coin is worth it. "The coin does cost more to produce, roughly on the neighborhood of 17 cents versus the 5 or 6 cents that a paper dollar costs to produce," he said. "However, the coin lasts 35 years, and it's made of mostly recycled metals, and the paper has to be produced from new materials, and we shred 3 billion of those every year because they wear out." For years, the former Arizona congressman has been pushing legislation that would prop up the dollar coin by phasing out the greenback -- a move that has met resistance from both politicians and the public. But today, he said, _ and a recent poll indicates 61 percent of Americans like the idea. "When they learn of the savings that can be involved with this, they will support the idea of substituting the coin for the paper dollar," he said. Major savings Kolbe points to a study by the Government Accountability Office, which investigates how the government spends taxpayer dollars. The GAO estimates taxpayers would save more than $4 billion over 30 years, and that figure could be much higher. That appeals to taxpayer Christy Thompson, who said, "I'd probably say, yes, we need to do it." But plenty of people aren't convinced, including Kim Doering of Alexandria, Virginia. "It's easier to carry the paper bill than a bunch of coins. They're louder; they're heavier in your pocket," she said. Washington, D.C. restaurant owner Sue Fouladi doesn't like the idea of having more dollar coins in her cash register. "It's very inconvenient," she said. "If I don't have a choice, then I'll do... Question: Which of the following is the advantage of dollar coins according to the passage? - They cost less than paper bills . - They are convenient to carry. - They are not easy to wear out. - They are produced from new materials.
Ans: They are not easy to wear out.

Question: Read the following article and select the best answer. Article: Water and its importance to human life are the center of the world's attention. March 22 is World Water Day, which has the theme "Water and culture "this year. There are more than one billion people in the world who live without safe drinking water. The United Nations hopes to cut this number in half by 2015. Solving such a big problem seems like an unreal challenge. But everyone, even teenagers, can do something to help. A teenage girl in the U.S. has set an example to others of her age around the world. Rene Haggerty, 13, was awarded the 2004 Gloria Barron Prize for her work of collecting deserted batteries which pollute water. In 2003, Haggerty went on a field trip to the Great Lakes Science Centre in Ohio. There, she saw an exhibit about how chemicals in old batteries harm the water of Lake Erie. Haggerty learnt that recycling the batteries was an easy solution. "I think everybody can do it, because everyone uses batteries, and it can make a big difference." With these words, she began to increase awareness in her area. She talked to her county government and school board. She got permission to start a recycling programmed in schools as well as the public libraries, hospitals, and churches. With the help from her family, friends and local waste-management officials, she gathered containers, arranged transportation, and made an educational video. Over the past two years, she collected four tons of batteries and drew the attention of officials, who were in charge of a battery recycling programmed but had made little progress. When asked if she feels like a hero, Haggerty is quite modest . "Not really. Well, maybe for the fish I saved!" Every year the Gloria Barron Prize honors young Americans aged 8 to 18 who have shown leadership and courage in serving the public and the planet. Each year ten winners receive $2,000 each, to help with their education costs or their public service work. Question: The best title for this passage should be _ . - A girl awarded the 2004 Gloria Barron Prize - A girl acts to clean the world's water - We should protect our environment - A girl collecting batteries
Answer:
A girl acts to clean the world's water