input question: Write a multi-choice question for the following article: Article: The average temperature around the world is rising. People living in the US Midwest might find this fact hard to believe, though. Two new studies show that in America's heartland, summers are now cooler and wetter than they were in years past. The scientists suggest that the change in the Midwest climate may have happened because of farming. The first study was led by David Changnon, a climatologist at Northern Illinois University in DeKalb. A climatologist studies the climate of an area, which includes measuring rainfall, temperature and wind. Climatologists want to know how these factors have changed in the past, and how they'll change in the future. Changnon and his team studied temperature records from Chicago and 13 other sites in the Midwest. "These two changes--lower temperatures and more rainfall--may be connected by humidity," Changnon says. Humidity is the measure of how much moisture is in the air. Humid air, which contains a lot of moisture, takes longer to heat up than dry air. So where did the extra _ in the air come from? Changnon points to farms in the region. As plants grow, they pull moisture from the ground and release it into the air. And among plants, soybean and corn plants release a lot of moisture. Midwestern farms now plant more soybeans and corn than in the past, with 97 percent of farmland today planted with these two crops. He also notes that the plants are planted closer together now than they used to be, so there are more plants per acre than in the past. The second study was led by famous scientists from the US. The researchers studied a vast area of the United States that stretches from South DaKota to Oklahoma and the Texas panhandle. They found that in 1930, farmers in that region irrigated only about 1.8 million acres of farmland, an amount roughly half the size of Connecticut. In 1980, however, farmers irrigated nearly 15 million acres--more land than Vermont and New Hampshire combined.???
output answer: Question: The best title for the article is _ .Options:A The Weather Is Changing Better NowB The Analysis for the WeatherC Why Climate in Midwest Is ChangingD The Importance for Plants and IrrigationAnswer:C

input question: Write a multi-choice question for the following article: Article: From the very beginning, Martin felt that he was bound up with(......)his lovely little patient. One day, following some tests , Betty gave the doctor a big hug . A few months later the doctor removed not only the tumour , but also the entire lower left side of Betty's gum and jawbone. Because Betty was so young, Martin was hopeful that her jawbone might regenerate. Within three months, Betty's tumour grew as large as an orange, changing the natural appearance of the left side of her small, delicate ( =" thin;" not strong)face. Soon she couldn't even close her mouth, and as her eating problems worsened, Betty 's weight dropped from 20 kilos to 15. Martin knew from experience that it might invade the brain. The only other possibility was thorough radiation therapy . Night after night, Betty's father gave her injection, but the tumour remained as big as ever. Then one evening. Morgan noticed that the tumour had begun to change. It was actually becoming smaller! For two months her tumour appeared to be going away for ever. In the coming months, Betty's tumour continued to appear. She was able to eat solid food once again. Her jawbone was regenerating. The tumour was gone.???
output answer: Question: What did the doctors do two months later?Options:A They continued their observations.B They gave up the operation on Betty.C They found out what caused Betty's strange disease.D They declared that Betty's strange disease was cured.Answer:B

input question: Write a multi-choice question for the following article: Article: Have you ever asked yourself why you have two eyes instead of one, three, or even hundreds as some insects have? Have you wondered why your eyes are set close together on the front of your face rather than on the sides of your head, as on animals like rabbits, antelopes, and horses? The reasons are simple -- and important to the way you see the rest of your world. Your eyes are like two small cameras. A camera catches an image of an object and records this image in miniature on a small piece of film. Similarly, when you look at something, each eye takes in what it sees and sends this image to the back of the eyeball. From each eye, an optic nerve then sends the image to the brain. Because your eyes are set close together, they view the world from about the same height but from slightly different angles. While your right eye sees an object a little to the right, your left eye sees the same object slightly to the left. Working as a team, the eyes send the images to the part of your brain called the cerebral cortex, which combines them into a single, centered image. Seeing with two eyes working together is called stereoscopic vision. This allows you to view the world in three dimensions, or 3-D. These dimensions are height, width, and depth. Sensing depth allows you to judge the distance between you and the objects you see. It also helps you to adjust to the changing angle at which you see something as you move closer to or farther away from it. As you walk along a sidewalk, for example, seeing in stereo helps you to know how close you are to the street, how far you need to walk to arrive at a certain building, and how close you are to stepping on a rock or a piece of glass. As your body moves, your eyes give you a continual flow of information about where things are in relation to where you are. If images are coming from only one eye, however, only two of these dimensions - height and width - can be sensed. A world seen with one eye is thus two-dimensional, as in a photograph. The...???
output answer: Question: This article would most likely be found in a _ .Options:A textbook about animal behaviorB popular science or health magazineC professional magazine for doctorsD newspaper's local news sectionAnswer:C

input question: Write a multi-choice question for the following article: Article: The first kind of air transportation was not a plane. It was a balloon. People traveled by balloon 100 years before there were planes or jet aircraft. Those early days of ballooning were exciting, but they were also dangerous. Sometimes the balloons fell suddenly. Sometimes they burned. However, the danger did not stop the balloonists. The first real balloon flight was in France in 1783. Two Frenchmen, the Montgolfier brothers, made a balloon. They filled a very large paper bag with hot air. Hot air is lighter than cold air, so it goes up. The Montgolfier's hot air balloon went up 1,000 feet in the sky. Later that same year, two other Frenchmen ascended in a basket under a balloon. They built a fire under the balloon to make the air hot. This made the balloon stay up in the air for a few hours. But their balloon was tied to the ground. So it could not go anywhere. The first free balloon flight was in December, 1783. The balloon flew for 25 minutes over Paris. It traveled about 5.5 miles. Flying a balloon is not like flying a plane. The balloon has no engine and therefore no power of its own. The wind directs the balloon. It goes where the wind blows. The pilot can control only the altitude of the balloon to find the right wind direction. That is how a good pilot controls where the balloons goes. Soon balloonists tried longer flights. A major event in the history of ballooning was the first long flight over water. In 1785, an American and a Frenchman flew over the English Channel. During the nineteenth century, ballooning became a popular sport. There were balloon races in Europe. Balloons were also used by scientists to study the air and by armies in wartime. After the airplane was invented, people lost interest in balloons. Planes were much faster and easier to control. But some people today still like to go up in balloons. High up in the balloon basket, they find quietness. They have wonderful view of the world below.???
output answer:
Question: The balloon rises if the air inside get _ .Options:A colderB hotterC outD fellAnswer:B