【文章內(nèi)容簡介】 Make yourself aware of the type of the ground you are standing on,and know that in a crowd of moving people wet ground can cause you to fall.When in danger,a few seconds can make a difference，giving you the possibility of making use of your escape route. Always stay closer to the escape route. If you find yourself in the middle of a moving crowd，do not fight against the pressure and do not stand still or sit down，because you can easily get trampled(踩傷)．Instead , move in the same direction of the crowd。 make use of any space that may open up to move sideways to the crowd movement where the flow is weaker.Keep your hands up by your chest, like a boxer —it gives you movement and protects your chest. If you fall, get up quickly. If you can39。t get up because you are injured, get someone to pull you up. If you have kids，lift them up. If you fall and cannot get up, keep moving in the same direction of the crowd,or if that is not possible, then cover your head with your arms。 do not lie on your stomach or back.28. Why may people in a stampede die standing up?A. They can39。t breathe freely.B. They push in the same direction.C. They are not able to get up.D. They aren39。t familiar with the surroundings.29. What does the underlined word fatal mean in the first paragraph?A. Harmful. . C. Deadly. .30. What should we do to make a difference when in danger? against the pressure. B. Stand still where you are.C. Sit down covering your chest. D. Move along the escape route.31. What does the writer mainly want to tell us in the passage?A. How to stay far away from a crowd. to do when you are in a crowd.C. Where to go when you are in danger. to get along with a big crowd.DSuperheroes first caught our attention in the 1930s when Superman and Batman appeared in American ic books, and we39。ve been crazy about them ever since. But have you ever stopped to think whether the superman rally exists( 存在)? Wim discovered his super power one day after saving a man from a frozen lake. Since then, he39。s puzzled scientists with his super ability to bear the freezing breathing skills and a strong mental focus, he39。s learned to control his body temperature. For his 2011 Guinness World Record he stayed in ice for nearly two hours. He39。s also climbed toMount Everest in just his shorts and run a desert marathon(馬拉松賽跑) without a drop of water.In the real world, there’ re some blind people who can use echolocation skills to see the world around them, just like bats. By making noises with their mouths or by snapping their fingers, they can interpret(領(lǐng)會) the sound waves made back by nearby objects. Daniel, who lost his sight because of cancer as a baby, has taught himself the skills and shared his knowledge with hundreds of blind people worldwide.This has enabled them to run, hike, play football and go skateboarding, etc.Dean can run forever. He regularly pushes his mind and body to the limits running nonstop without sleep for 350 miles or pleting 50 marathons in 50 days. He39。s also run 135 miles nonstop across Death Valleyaround 49℃ and to the South Pole ,where temperatures fell to 40℃.Alain is one of the best rock climbers worldwide. Some of his tallest climbs include the Sydney Tower and the Eiffel Tower. Unbelievably strong both mentally and physically, Alain is famous for his free solo climbing, climbing tall buildings without ropes just with his arms, legs and a bag of chalks.Some of the above people are selftaught and have gained their skills with years of training. Others are born with unusual physical characters ,leaving scientists confused.One thing is for surethe superman certainly exists.32. What can Wim do according to Paragaph2 ?A. Stand the very low temperatures. B. Focus his thoughts on a frozen lake.C. Change his body temperature. D. Stay in ice for