【正文】 。t going to work in her brother39。t going to change her major. seeds, dropping them some distance away. This helps to disperse the population of the plant species over a larger area.The numerous birds of the rainforest also play a major part in seed dispersal. When they eat fruit from a plant, the seeds pass through their digestive system. By the time they excrete (排泄) the seeds, the birds may have flown many miles away from the fruitbearing tree.There are also a large number of reptiles and mammals in the rainforest. Since the weather is so hot and humid during the day, most rainforest mammals are active only at night, dusk or dawn. The many rainforest bat species are especially well adapted for this lifestyle. Using their sonar, bats navigate easily through the mass of trees in the rainforest, feeding on insects and fruit.While most rainforest species spend their lives in the trees, there is also a lot of life on the forest floor. Great apes, wild pigs, big cats and even elephants can all be found in rainforests. There are a number of people who live in the rainforests, as well. These tribes which, up until recently, numbered in the thousands are being forced out of the rainforests at an alarming rate because of deforestation.DeforestationIn the past hundred years, humans have begun destroying rainforests at an alarming rate. Today, roughly acres of rainforest are destroyed every second. People are cutting down the rainforests in pursuit of three major resources：RainforestsTropical rainforests are the most diverse ecosystem(生態(tài)系統(tǒng))on Earth, and also the oldest. Today, tropical rainforests cover only 6 percent of the Earth39。 s ground surface, but they are home to over half of the planet39。 Land for crops s firm.12. A) She will do her best if the job is worth doing.t think much of jobhopping.13. A) Stop thinking about the matter. C He wanted to make sure they got tickets.t have the hotel39。 C) A college graduate with practical working experience. C) Great improvements are being made in its capital. D) Rapid spreading of the epidemic. D) A hundred people in the suburbs were drowned.27. A) Fifty underground stations were made waterproof. D) It killed man baby bald eagles.30. A) They found ways to speed up the reproduction of bald eagles. C) Overkilling by hunters. D) How tears are produced.33. A) What chemicals tears are posed of. B) Only humans shed tears to get rid of imitating stuff in their eyes. D) Only human tears can discharge certain chemicals.s these jobs they39。 private lives.Europe39。ve always done what I wanted to do：live a selfdetermined life.52. More and more young Europeans remain single because ________. D) It is being threatened by irresistible privatization.54. According to Paragraph 3, the newest group of singles are ________.s claims, the EPA was never asked to consider the organism for field trials.The EPA has not mented on the dispute. But an to the network from Janet Anderson, director of the EPA39。s also not clear whether the organism, first engineered by a German institute for biotechnology, is still in use.Whether Ingham is right or wrong, her supporters say opponents are trying unfairly to silence her.I think her concerns should be taken seriously. She shouldn39。 D) healthy and wealthy55. The author quotes Eppendorf to show that ________. B) they have entered the workforce at a much earlier ages shift from social democracy to the sharper, more individualistic climate of Americanstyle capitalism. Raised in an era of privatization and increased consumer choice, today39。s just the way it is, it39。 C) Why some people tend to cry more often than others. D) Destruction of their natural homes. C) They explored new ways to hatch baby bald eagles. C) An alarm system was set up. C) Reasonable enough. B) The man can ask the department store for help. B) It will stimulate business activities. B) He didn39。 C) Be more friendly to his schoolmate. C) She will stick to the job if the pay is good. Land for livestock pasturesIn the current economy, people obviously have a need for all of these resources. But almost all experts agree that, over time, we will suffer much more from the destruction of the rainforests than we will benefit.The world39。s axis, the Northern and Southern hemispheres each spend part of the year tilted away from the sun. Since rainforests are at the middle of the globe, located near the equator, they are not especially affected by this change. They receive nearly the same amount of sunlight, and therefore heat, all year. Consequently, the weather in these regions remains fairly constant. The consistently wet, warm weather and ample sunlight give plant life everything it needs to thrive. Trees have the resources to grow to tremendous heights, and they live for hundreds, even thousands, of years. These giants, which reach 60 to 150 ft in the air, form the basic structure of the rainforest. Their top branches spread wide in order to capture maximum sunlight. This creates a thick canopy (樹冠) level at the top of the forest, with thinner greenery levels underneath. Some large trees grow so tall that they even tower over the canopy layer.As you go lower, down into the rainforest, you find less and less greenery. The forest floor is made up of moss, fungi, and decaying plant matter that has fallen from the upper layers. The reason for this decrease in greenery is very simple：The overabundance of plants gathering sunlight at the top of the forest blocks most sunlight from reaching the bottom of the forest, making it difficult for robust plants to thrive.The Forest for t