A window is more than just an opening that you can see through. It can affect the way a building looks,how much energy a building USES and even how you feel.     Scientists are now working on ncw technologies to create"smart windows". Unlike normal windows,high-tech smart windows can change from clear to dark and back again with the touch of a button --or even automatically as the outside light  changes. Smart windows have the power to make the world a cleaner and more comfortable place. Instead of turning on air conditioners ,people could simply  _ the windows in a building's empty rooms. With the rooms less bright,they would stay cool,and people would save energy and money at the same time.     That's why smart windows are so exciting. Says Claes Granqvist. He's a professor of physics at Uppsala University in Sweden. If you think that you don't care much about windows,you should think again,Granqvist says. Most people who live in developed countries spend about 90% of their time inside buildings and cars. You might spend even more time than that indoors during the winter if you live in a cold climate.     Imagine then what it would be like if there were no windows. You'd have no idea what's going on outside. So,the light of the nature is important for improving the way people feel when they stay indoors. The development of smart windows could mean that a lot of air-conditioning systems may no longer be needed. "In the future," Granqvist says "our buildings may look different." Which of the following would be the best title for this passage? A) Windows Are Important B) Buildings in the Future C) A Kind of New Window--the Smart Window D) The Magic of High-tech
B


(Question)
Three--quarters of a million tourists flock to the white beaches every year,but this booming industry has come at a price.Poisonous smoke rising from open fires,rubbish made up of plastic bottles,packets...it'S a _ from the white sands,clear waters and palm trees that we associate with the Maldives ,the paradise island holiday destination set in the Indian Ocean. of its 200 inhabited islands,which are spread across an area of"35,000 square miles,99 are good resorts .So many tourists come every year,more than double the local population.Of these,over l 00,000 travel from the U K.The capital,Mal6,is four times more densely populated than London.Given these facts,it'S hardly surprising that the Maldives has a waste disposal problem. Y ears a90,when the tourists left,the government had to deal with a stream of rubbish.Their solution was to turn one of the islands into a dumping ground.Four miles west of Mal6 is the country's dumping ground,Thilafushi.What you are seeing here is a view of the Maldives on which no honeymooners will ever clap eyes.Each visitor produces 3.5 kg of waste per day.The country dumps more than 330 tons of rubbish on the island every day. Now,since many waste boats,fed up with waiting seven hours or more,directly offload their goods into the sea,the government of the Maldives has banned the dumping of waste on the island.S0,the waste boats ship the rubbish to India instead. What is the main cause of the waste disposal problem? A) The big local population. B) Too many waste boats. C) The large number of tourists. D) Open fires on the islands.
(Answer)
C


Ques: I learned how our attitudes made a big difference in our everyday lives from my friend Mary. She doesn't have any pets. I happened to see her outside on a -30 degree morning walking a dog. I felt sorry for Mary, out there walking a dog that's not hers in such cold weather. I thought maybe she was saying to herself, "Yeah, this is why I don't have any pets! I hate walking dogs." Later that day I saw Mary and said, "I saw you out there walking a dog this morning. Are you unhappy because you had to walk it on such a cold day?" To my surprise, she said that she enjoyed getting out there and walking the dog and that she got good exercise because of the dog. She also said she had talked to her brother, the dog's owner, who was on holiday in Orlando, Florida with his family. He said his children were enjoying Disney World and the resorts  . His four-year-old son had breakfast with Mickey Mouse and said it was the best day in his life. Mary said, "If I can help my brother and his family have a wonderful time relaxing for a week, knowing that their pet is being loved and cared for, what more could I ask for?" She added, "It's worth it for me to make the sacrifice   so that they can go and have fun." I learned a lesson from Mary. Why did the author feel sorry for Mary? A) It was a cold morning. B) He thought Mary was suffering because of others. C) Mary didn't have any pets. D) He found Mary was unhappy to walk the dog.
Ans: B


Ques:Robots make me nervous-especially the ones which seem to think for themselves.I was  embarrassed to admit this till I heard that Bill Gates,the founder of Microsoft,felt the same  way.Gates said in an interview with the website Reddit:"I am in the camp that is concerned  about super intelligence.First the machines will do a lot of jobs for us and not be super  intelligent.That should be positive if we manage well.A few decades after that though the intelligence is strong enough to be a concern." Well,maybe I don't have to worry about my laptop and kitchen appliances yet.After I  use them I can always pull the plug.But in the future,machines might find a way to prevent  us from switching them off.There's a scary thought! Professor Stephen Hawking warned a few months ago about the possibility that artificial intelligence could evolve and end up beyond human contro1.He suggested that machines could" _ the end of the human race". Maybe the problem with computers too clever for us is not that they are evil or rebellious.What could put us in danger is that they might be too efficient.That's what philosopher Nick Bostrom from the Future of Humanity Institute at Oxford University believes.He says that machines are indifferent to humans and in pursuit of their own goals,the destruction of people might be just collateral damage.A machine would not take pity on you. I'm glad my machines at home are"dumb".All my vacuum cleaner wants to take over is the carpet in my living room.Let's hope they don't create an appliance which wants to take over the world! What can be inferred about the author? A) He doesn't agree with Bill Gates. B) He is not content with the present kitchen appliances. C) He is scared about the super intelligence of machines. D) He expects that machines will take place of humans.

Ans:
C