tailieunhanh - Đề thi thử THPT Quốc gia năm học 2014-2015 môn tiếng Anh

Sau đây là Đề thi thử THPT Quốc gia năm học 2014-2015 môn tiếng Anh giúp các em học sinh ôn tập và luyện thi THPT Quốc gia. Chúc các em ôn thi hiệu quả. | ĐỀ THI THỬ KỲ THI THPTQG NĂM HỌC 2014 - 2015 ĐỀ 1 I. Reading the passage and choose the best answer. Many of the most damaging and life-threating types of weather-torrential rains severe thunderstorms and tornadoes-begin quickly strike suddenly and dissipate rapidly devastating small regions while leaving neighboring areas untouched. One such event a tornado struck the northeastern section of Edmonton Alberta in July 1987. Total damages from the tornado exceeded 250 million the highest ever for any Canadian storm. Conventional computer models of the atmosphere have limited value in predicting short-live local storms like the Edmonton tornado because the available weather data are generally not detailed enough to allow computers to discern the subtle atmospheric changes that precede these storms. In most nations for example weather balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently the observation-intensive approach needed for accurate very short range forecasts or Nowcasts was not feasible. The cost of equipping and operating many thousands of conventional weather stations was prohibitively high and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were insurmountable. Fortunately scientific and technological advances have overcome most of these problems. Radar systems automated weather instruments and satellites are all capable of making detailed nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously and modern computers can quickly compile and analyzing this large volume of weather information. Meteorologists and computer scientists now work .