2013高考英语二轮（阅读理解）金品训练（02）及答案A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16.Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover, these areas would reflect more heat into the atmosphere，warming the rest of the world.Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters all over the world.In the past hundred years, humans have begun destroying rainforests in search of three major resources (资源): land for crops, wood for paper and other products, land for raising farm animals. This action affects the environment as a whole. For example，a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.There are two main reasons for this. Firstly, when people cut down trees, generally they can only use the land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right now, but in the long run it actually reduces the world s wood supply.Rainforests are often called the worlds drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the worlds shrinking rainforests.语篇解读文章论述了热带雨林的重要作用以及对环境的影响。1Rainforests can help to adjust the climate because they_.A. reflect more heat into the atmosphereB. bring about high rainfall throughout the worldC. rarely cause the temperature to drop lower than 16D. reduce the effect of heat from the sun on the earth解析因果判断题。由文章第一段内容可以得出答案。答案D2What does the word “this” underlined in the third paragraph refer to?A. We will lose much more than we can gain.B. Humans have begun destroying rainforests.C. People have a strong desire for resources.D. Much carbon dioxide comes from burning rainforests.解析由上下文内容可知，A项正确。答案A3It can be inferred from the text that_.A. we can get enough resources without rainforestsB. there is great medicine potential in rainforestsC. we will grow fewer kinds of crops in the gained landD. the level of annual rainfall affects wind patterns解析推测判断题。由文章最后一段内容即可得出答案。答案B4What might be the best title for the text?A. How to Save RainforestsB. How to Protect NatureC. Rainforests and the EnvironmentD. Rainforests and Medical Development解析主旨大意题。整篇文章主要论述了热带雨林的重要作用以及砍伐热带雨林对环境所造成的影响。答案C*结束ATo complete a study, a team of scientists left Boston and went halfway around the world to the middle of KenyaThey wanted to find out more about barefoot runningSure, people can run barefoot anywhereBut Kenya has produced some of the most famous long-distance runners in history, and many of these athletes grew up not wearing shoesScientist Daniel Lieberman visited some of these runners to figure out what a difference shoes makeIt was a big difference, and not necessarily for the betterIn particular, when a bare foot hits the ground, the blow（冲击） is softer and the running motion is smootherRunning barefoot may have advantages over running with shoes on, though more studies are needed to determine whether or not barefoot running reduces the chance of injuresOne shouldnt be scared of barefoot running or think it strange, Lieberman told Science News Its normal and, if done properly, it is very fun and comfortablePrevious studies have shown that when a person runs barefoot, he lands on the fronts or middles of the feetThen the heels（脚后跟） go downDuring this process, the weight of the body is at first on the fronts of the feet, then moves to the heelsWhen a person wears shoes, however, he tends to run so that his heels hit the ground firstThe effect of the heel hitting the ground many he much more forceful than the effect of the front of the foot hitting the groundThe researches also studied barefoot runners in their laboratoryThe goal was to measure the force with which a runners foot hits the groundA rear-foot （后足） strike is like someone hitting you on the foot with a hammer with about one and a half to three times your body weightIt would hurt without a shoeLieberman saidA forefoot strike is like having no one hit you at allThe study explores the physics of running, which is a complex topicThe idea that barefoot running is better is a massive assumptionReed Ferber, a biochemist at the University of Calgary in Canada saidBasically, there are no studies out there that show barefoot running is less injurious41Lieberman s attit