Ques: Read the following article and select the best answer. Article: Have you ever walked outside thinking it was one temperature but quickly discovered it felt colder? That is because of the "wind chill" effect. Wind chill is how cold people and animals feel when they are outside, not the actual temperature on the thermometer . It is based on how quickly your body loses heat when it is exposed to wind and cold. When the wind is strong, your body quickly loses heat, making the temperature of your skin drop. When scientists first started calculating wind chill, they used research conducted in 1945 by explorers to Antarctica who measured how quickly water froze outside. But water freezes faster than exposed skin, so the wind chill index based on that data wasn't accurate. In 2001, the US government began to measure wind chill more precisely by testing how quickly people's skin froze. Twelve volunteers were placed in a chilled wind tunnel. Equipment was stuck to their faces to measure the heat flow from their cheeks, forehead, nose and chin while they walked three miles per hour on a treadmill . The experiment revealed how quickly exposed skin can be damaged, particularly unprotected areas like your fingers, toes, the tip of your nose and your ear lobes. In fact, 40 percent of your body heat can be lost through your head! Signs you might have frostbite are when the skin turns white or pale and you lose feeling in that area. The information collected from the volunteers helped scientists work out the math to compute wind chill. It involves wind speed and air temperature. If, for example, the temperature outside is zero degrees Fahrenheit and the wind is blowing at 15 miles per hour, the wind chill is calculated at 19 degrees below zero. At that wind chill temperature, exposed skin can freeze in 30 minutes. You can find a calculation table at www.nws.noaa.gov/om/windchill/index.shtml. Experts advise in cold weather that you wear loose-fitting, lightweight, warm clothing, worn on top of each other. Air caught between the clothes will keep you warm. The best cold-weather coats have... Question: What factors influence wind chill? - A person's body temperature and will speed. - Wind speed and a person's strength. - Air temperature and wind speed. - The location and air temperature.
Ans: Air temperature and wind speed.

Ques: Read the following article and select the best answer. Article: Rice plants normally grow well in still water. But most will die if they are completely underwater for more than four days. Now, researchers have identified a gene that helps rice survive longer underwater. They say the discovery will lead to new kinds of rice plants that can survive flooding, and therefore reach their final aim, ensuring more dependable food supplies. Tests are now being done in prefix = st1 /Laos,BangladeshandIndia. The researchers say experimental rice plants with the gene have survived underwater as long as two weeks. When flooding happens, most kinds of rice plants cannot get enough oxygen, carbon dioxide or sunlight. But the scientists say crop loss depends on several conditions. These include soil conditions and plant age. Others include the amount of time the plant is underwater and the amount of fertilizer used on the crop. On a genetic map of rice, the scientists became interested in a group of three genes. They experimented with one of them, a gene known as Sub-One-A. They found that when this gene becomes very active, it improves the ability of rice to survive longer when rice is covered by water. They believe it succeeds because it affects the reaction to hormones . _ control the ability of a flooded plant to survive. Placing the gene into rice plants that are especially good for conditions inIndia, researchers say the genetically engineered plants not only survived but also produced good crops. The researchers are now trying to identify all the genes governed by the Sub-One-A gene. Being able to leave water on rice plants for an additional week might also help farmers prevent the growth of weeds. Less weed growth around their crops would mean less need for herbicide chemicals. Question: What would be the best title for the passage? - Rice research is going on in LaosandIndia - How to reduce the influence of floods on rice - Gene researchers work on flood-resistant rice - A great discovery in the agricultural field
Ans: Gene researchers work on flood-resistant rice

Ques: Read the following article and select the best answer. Article: Seeing the Horse Eat Fish Once an old man was walking in a street with his horse. It was raining hard. The old man was cold because he was walking in the rain. He wanted to stay in a restaurant. It was a quarter past three in the afternoon. The old man got to a small restaurant. There were a lot of people in it. The old man couldn' t come near the fire. He thought and thought. At last he said to the waiters, "Take some fish to my horse." The waiter and the people were very surprised. The waiter said, "A horse doesn't eat fish." The old man told the waiter, "This horse is very interesting. It can sing, dance and does all kinds of things. It can eat fish, too," So the waiter brought the horse some fish. All the people in the restaurant ran out to see the horse eat fish except the old man. Now the old man sat beside the fire. After a while the waiter came back and said. "Your horse didn't eat any fish." The old man said, "All right, take the fish back and put it on the table. I'll eat it." Note: stove waiter Question: The old man felt very cold because _ . - it was a cloudy and windy day - it snowed - he had travelled in the heavy rain - he was hungry
Ans: he had travelled in the heavy rain

Ques: Read the following article and select the best answer. Article: A famous Renoir had been stolen from a museum. Detective Earl Blackman was to work on the case. Everyone was in the dark before an art professor came to point out the false picture. So the museum even didn't know when the picture had been stolen. Thousands of people came to visit the museum every day. After long work, some art students were focused on. The five students who had made copies of the Renoir during the last six months were asked to bring their copies to the museum. The fifth student said she had sold her copy, which was later proved to be the one in the museum. She, however, could only remember the buyer was a man with the little finger on his left hand missing. Blackman went back and stayed in his office looking at all the pictures of known thieves. No success. The next afternoon, at about closing time, Blackman went to the museum to ask if the cleaning men were in the museum after everyone else had left. The director told him they had no cleaning man but six cleaning women. As the detective left the director's office, he saw five cleaning women. He stopped one and asked about her work. Then came the sixth cleaning woman. She was dressed just like the other women except the gloves on her hands which made her different. Blackman watched her for some time. When she came near, Blackman caught her. The woman cried out in a man's voice, "What was that?" Blackman was more sure. Question: Blackman caught the cleaning woman because of _ . - the glove - the clothes - her sex - her work
Ans:
the glove