Ques: Article: What will power your house in the future? According to scientists at the Massachusetts Institute of Technology (MIT) in the US, it might be artificial leaves. Natural leaves can change sunlight and water into energy. It is known as photosynthesis . Now researchers have found a way to imitate this process. The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts . Similar to natural leaves, it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell, using those two materials to produce electricity, located either on top of a house or beside the house. Though the leaf is shaped like a poker card, scientists stated that it is promising to be an inexpensive somtoe of electricity in developing countries. "One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology," said an American scientist, Docera. An artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but too expensive and unstable for practical use. The new leaf, however, is made of cheap materials, easy to use and highly stable. In laboratory studies, Nocera showed that an artificial leaf could operate continuously for at least 45 hours. The wonderful improvements come from Nocera's recent discovery of several powerful new, inexpensive catalysts. These catalysts make the energy transformation inside the leaf more efficient with water and sunlight. Right now, the new leaf is about 10 times more effective at carrying out photosynthesis than a natural one. Besides, the device can run in whatever water is available. Hopefully, each home could possible have the access to the new application in the future. Question: Which of the following is NOT the advantage of the new leaf? Yes or no, is the answer "It has a wonderful fuel cell."?
Ans: No

Ques: Article: At railway stations all across Britain next week, groups of students will gather with their backpacks to wait for the trains that will carry them home for Christmas. This is as large a movement of human beings as before, but with more contradictory traffic flows, so that trains filled with the young pass each other travelling in every direction. At first, I went home every weekend with my washing, but then those visits became less regular. How did I let my parents know I was coming? They had no phone. Perhaps I wrote to them ("Expect me with dirty shirts this Friday afternoon"), but more likely I didn't let them know, and just turned up or didn't turn up, not understanding that my parents' dashed hopes of seeing me were a greater casualty of my carelessness than a spoiled tea. And in all this I suspect I was typical, at least of young men. As for our fathers and mothers, none of them talked of "empty-nest syndrome", even though its implication that the principal human duty is to protect and feed the young would have suited their generation better than ours. Then, the feelings of loss went without a name. Today, it's a condition with _ , which will make parents feel more enjoyable in their life. The Mayo Clinic, for example, suggests you try to maintain regular contact with your children through "visits, phone calls, emails, texts or video chats". If you feel depressed, lean on loved ones or your mental health provider. Above all, stay positive: "Thinking about the extra time and energy you might have to devote to your marriage or personal interests after your last child leaves home might help you adapt to this major life change." What can't be denied, however, is that children often leave home. In modern societies, this is what they do. Christmas is the very time they can be depended on to return. For the non-religious, that may be this season's true comfort and significance. Question: From the passage we can infer that by writing the article the writer's purpose is to _ . Yes or no, is the answer "persuade the young to show concern for their parents"?
Ans: No

Ques: Article: An affordable housing law passed three years ago promises a possible supply of below-market-rate homes, but has failed to encourage increased housing production and is unlikely to affect prefix = st1 /San Francisco's poorest families. Barbara, 44, who came to The City in 1970, have been trying to pick herself up from the bottom, where she and her children started out with just the clothes on their backs-through the kindness of others they got by. They were last homeless in 1999. Since then, Barbara has worked hard to keep from returning to the streets and the shelters, taking advantage first of transitional housing, then a rent assistance, and studying for a job as a nursing assistant and a home health aide. However the cost for housing has made it difficult for her to _ . She can't afford proper housing. Even an improper shelter costs as much as $ 1,200 for rent. She has to spend every night in a dining room. In this respect, she is not alone. There are hundreds of thousands of San Franciscans who are in the same boat with her. Since 2000, she's been providing health care in the homes of charity , and relying on an assistance program to pay the rent for her two-bedroom apartment in the Lower Height. A few months ago she lost her full-time job due to budget cuts, just as she had hoped to get a permanent post that would allow her to cover her $ 1,700 monthly rent. Now she works three or four hour shifts six days a week for $ 10.50 an hour, taking the bus around from client to client and worrying that in February, when her rent assistance is gone, she could end up on the streets with her family again. Question: Which of the following is not mentioned in the passage? Yes or no, is the answer "They were once living with a nursing man"?
Ans: No

Ques: Article: Health experts have long worried about the increasing rate of obesity in kids. It's an important concern: Being weight or obese during childhood can lead to serious problems normally seen in adults, such as diabetes and high blood pressure. Poor diets and a lack of exercise are usually the causes. But would you ever have imagined there might be a connection between the bacteria that lived in your guts when you were a baby and the chance that you would become overweight? Scientists in Finland recently found just such a link. In a recent study, they showed that overweight kids had different species of bacteria living in their guts. You probably think of bacteria only as germs that can make you sick. While it's true that some bacteria can make people ill, your body actually depends on some types of bacteria to help you digest food and extract nutrients from it. These "good" bacteria live in your guts, where they process the food you eat. Human babies get these bacterial helpers from their moms. When a baby is born, some of the bacteria in the mother move into the baby's body. Growing babies get additional "good" bacteria from the milk their mothers produce. And it turns out the bacteria might play an important role in regulating weight just six years later. So how could these bacteria affect weight? The researchers still haven't tested that question, but future tests might lead to an answer. Question: The purpose of writing this passage is to _ . Yes or no, is the answer "introduce the role of bacteria in children's weight"?
Ans:
Yes