Ques:Read the following article and select the best answer. Article: If a diver surfaces too quickly, he may suffer the bends. Nitrogen dissolved in his blood is suddenly liberated by the reduction of pressure. The consequence, if the bubbles accumulate in a joint, is sharp pain and a bent body -- thus the name. If the bubbles form in his lungs or brain, the consequence can be death. Other air-breathing animals also suffer this decompression sickness if they surface too fast: whales, for example. And so, long ago, did ichthyosaurs . That these ancient sea-animals got the bends can be seen from their bones. If bubbles of nitrogen form inside the bone they can cut off its blood supply. This kills the cells in the bone, and consequently weakens it, sometimes to the point of collapse. Fossil bones that have caved in on themselves are thus a sign that the animal once had the bends. Bruce Rothschild of the University of Kansas knew all this when he began a suty of ichthyosaurs bones to find out how widespread the problem was in the past. What he particularly wanted to investigate was how ichthyosaurs adapted to the problem of decompession over the 150 milllion years. To this end, he and his colleagues traveled the world's natural-history museums, looking at hundreds of ichthyosaurs from the Trassic period and from the later Jurassic and Cretaceous periods. When he started, he assumed that signs of the bends would be rarer in younger fossils, reflecting their gradual evolution of measures to deal with decompression. Instead, he was astonished to discover the opposite. More than 15% of Jurassic and Cretaceous ichthyosaurs had suffered the bends before the died, but not a single Trassic specimen showed evidence of that sort of injury. If ichthyosaurs did evolve an anti-decompression means, they clearly did so quickly -- and, most strangly, they lost it afterwards. But that is not what Dr Rothchild thinks happened. He suspects it was evolution in other animals that caused the change. Whales that suffer the bends often do so because they have sufaced to escape a predator such... Question: Rothchild might have concluded that ichthyosaurs _ . - failed to evole an anti-decompression means - grdually developed measures against the bends - died out because of large sharks and crocodiles - evoled an anti-decompression means but soon lost it

Ans:failed to evole an anti-decompression means
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Ques:Read the following article and select the best answer. Article: Jack went to a barber's shop and had his hair cut, but when he came out, he was not happy with the result . When his friend Bob saw him, he laughed and said, "What has happened to your hair, Jack?" Jack said, "I tried a new barber's shop today, because I wasn't quite satisfied with my old one, but this one seems even worse." Bob agreed . "Yes, I think you're right, Jack. Now I'll tell you what to do when you go into a barber's shop next time: look at all the barber's hair, find out whose hair looks worst, and then go straight to him." "Why shall I go to him?" Jack asked. "But that would be foolish!" "Oh, no, it wouldn't," answered Bob. "Who cut that man's hair? Just think it. He couldn't cut it himself, could he? Another of the barbers cut it. So you know he can't be the worst barber." Question: After Jack had his hair cut, he thought _ . - the new barber's shop was the best one - the old barber's shop wasn't so good as the new one - the new barber's shop was worse than the old one - the old barber's shop was the worst one

Ans:the new barber's shop was worse than the old one
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Ques:Read the following article and select the best answer. Article: As a health editor, I spend the majority of my day poring over content related to health. At HuffPost, we're lucky to talk to experts on a daily basis about how to live our best lives. It's clear that life would be healthier if we would just do the following things. Sure, some of these are easier said than done. Question: Emotional intelligence includes the following except _ . - confidence - motivation - stress - self-awareness

Ans:stress
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Ques:Read the following article and select the best answer. Article: About nine million people like rock climbing in America. Millions more take part in the activity around the world. Some do it just for fun. Others compete. Climbing takes strength, control and good balance. Climbers have to pull themselves straight up the face of very high rocks or walls. So they have to be strong enough to carry their own weight. And climbers sometimes have to hold onto rocks by only their fingers or toes. There are several kinds of rock climbing. Traditional rock climbing is done outside. Climbers wear ropes and tie equipment to the rocks as they climb many hundreds of meters up. They also connect their ropes to the equipment. If a climber slips, a rope can stop him from falling. Sport climbing is similar. However, in it the protective equipment is placed in the rock all the time. There is also indoor climbing. Rock walls made of wood have places for the climber's hands and feet. Ice climbing is exactly as it sounds. People climb glaciers or frozen waterfalls instead of rocks. They use special equipment for the ice. And then there is bouldering-climbing rocks between three and seven meters high. It is quicker and stronger climbing. Many climbers like bouldering because they can use less equipment. Climbers often need only special shoes and chalk . All climbers use chalk to keep their hands dry. Most rocks have cracks and holes and parts that stick out. Climbers use these for foot-holds and handholds. Climbers use their legs to climb. They try not to pull themselves up with their hands or arms. Arms and hands are for position and balance. People almost always climb in groups of two or more. Climbing alone is very dangerous. Expert rock climbers say only the very best in the sport should do it. Question: Which of the following is TRUE about rock climbing? - Climbers use their hands or arms to climb. - Climbers use no special equipment for ice climbing. - Climbers do rock climbing in groups. - Climbers do rock climbing without ropes

Ans:
Climbers do rock climbing in groups.
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