北京市房山区周口店中学2015届高三上学期期中考试英语试卷 Word版含答案_高中英语试卷

北京市房山区周口店中学2015届高三上学期期中考试英语试卷 Word版含答案

　　Economic growth is the increase in numbers of goods and services produced over time by an economy, and it's calculated in terms of real Gross Domestic Product （GDP）．Before growth is calculated, inflation （通货膨胀） is adjusted in order to take into account its misleading effect on the price of goods and services．Economic growth can also be explained as the increase in expected output, which results from an increase in actual output, or total demand．

　　There are certain aspects of economic growth which affect the environment．The first of these is the fact that in order to produce more goods and products, at a faster rate, the construction of large industrial plants is required．These plants produce a lot of waste, leading to the pollution of water and the atmosphere, which may cause negative long term health effects to nearby populations of animals, or people．They also lead to global warming．

　　Industrial manufacturing leads to the constantly increasing energy consumption．The traditional energy sources, which are commonly used nowadays, are considered to be the greatest polluters to the environment．There also exist so-called eco-friendly sources of energy．They are sometimes preferred but replacing the traditional sources with them also requires time, during which people have to make some sacrifices to support these undertakings．

　　In order to produce economically practical energy, a sometimes significant transformation of the natural site is often inevitable（必然的，不可避免的）．This is expensive and, has harmful effects on the environment．Application of wind energy would block airflows' natural speed, which is the reason for their decrease in strength, after crossing the windmill．Consequently, the pressure balance that is brought about by this current will be affected, and it is important to remember that the environment and weather conditions are directly affected by atmospheric pressure．