I'm taking a test and have to guess the right answer to the question after the article. Article: Electrical devices could soon use power make by human energy, Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking , British scientist Max Donelan and other scientists in Canada and the United States developed the device. The device connects to a person's knee, As the person walks, the device captures energy each time the person slows down, To do this ,the device helps with the slowing sown movement of the leg, The movements of the walking person push parts of a small machine that produces electricity, Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute, Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes. There are several possible uses for the device ,Developers say it could help people who work in areas without electricity to operate small computers, The deice could also be used in hospitals to operate heart pacemakers ,It could even be used to assist in the movement of robotic arms and legs. The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy, But the researchers hope to make a lighter, less costly version.An improved version should be ready in one year. The developers hope the device will one day help developing countries, Nearly twenty five percent of people around the world live without electric power. A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania,He created a bag carried on a person's back that also produces power from walking, The knee device does not produce as much electricity as the bag ,But the bag requires the walker to carry a load of twenty to thirty kilograms. Question: From the passage, we can learn that the electrical device can _ . Options: A: help housewives operate the washing machine B: make it much easier for us to go online C: produce more electricity than that invented by Larry Rome D: be applied in medicine to operate heart pacemakers
D

I'm taking a test and have to guess the right answer to the question after the article. Article: Myfriend'sgrandfathercametoAmericafromafarminThailand.Afterarriving in New York, he went into a cafeteria inManhattan to get something to eat. He sat down at an empty table and waitedfor someone to take his order. Of course nobody did. Finally, a woman with abig plate full of food came up to him. She sat down opposite him and toldhim how a cafeteriaworked. "Start out at that end," she said, "Just go along the line andchoose what you want. At the other end they'll tell you how much you have topay." "I soon learned that's how everything works in America,"the grandfather told my friend later, "Life's a cafeteria here. You can getanything you want as long as you want to pay the price. You can even get success,but you'll never get it if you wait for someone to bring it to you. You have toget up and get ityourself." Question: The grandfather went into a cafeteriato _ . Options: A: wait forsomeone B: get something toeat C: meet myfriend D: buy something
B

I'm taking a test and have to guess the right answer to the question after the article. Article: The English language is the result of the invasion of the island of Britain over many hundreds of years.The first invasions were by a people called Angles about 1, 500 years ago. The Angles were a German tribe who crossed the English Channel . Later two more groups crossed to Britain. They were the Saxons and the Jutes. Through many years, the Saxons, Angles and the Jutes mixed their different languages. The result is what is called Anglo-Saxon or old English. The next great invasion of Britain was done by Vikings about 1, 100 years ago. Many English words used today come from these ancient Vikings. The next invasion of Britain took place more than 900 years ago, in 1066. History experts call this invasion the Norman Conquest. The Normans were a French-speaking people from Normandy in the north of France. These new rulers spoke only French for several hundred years. It was the most important language in the world at that time. It was the language of educated people. But the common people of Britain still spoke old English. Old English took many words from the Norman French. Some of these include "damage", "prison", and "marriage". The French language used by the Norman rulers greatly changed the way English was spoken 800 years ago. English became what language experts call Middle English. Middle English sounds like Modern English. But it is difficult to understand now. The history of the English language continues as Middle English becomes Modern English, which is spoken today. Question: During the rule of the Normans, the language people spoke showed their _ . Options: A: races B: social positions C: ability D: names
B