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　　雅思阅读长难句分析基本原理--Step 4. 判断语法现象

　　分析判断划线部分内容的语法功能，增强阅读语法意识

　　1) The education of our young people is one of the most important aspects of any community, and ideas about what and how to teach reflect the accepted attitudes and unspoken beliefs of society.

　　2) They are the San, a tribe of traditional hunter-gatherers, who used to travel in search of food for their families instead of growing it or keeping animals.

　　3) This means that instead of using artificial chemicals to make food tasty, food manufacturers could use help the quantity of the real substance and a tiny quantity of taste enhancer to make the food taste good.

　　4) Ask any young person to tell you the names of some famous movies and the chances are that many of those mentioned will be popular because of computer-generated special effects.

　　5) Visitors can view the albatross colony from a special building which has been established beside the nesting ground and, while the site is closed during breeding season, at other times it is often possible to see parents and their chicks living and feeding only metres away from human observers.

　　6) The structure of the backbone shows, however, that Ambulocetus swam like modern whales by moving the rear portion of its body up and down, even though a fluke was missing.

　　7) The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration.

　　8) The gradual drying of the soil caused by its diminished ability to absorb water results in the further loss of vegetation, so that a cycle of progressive surface deterioration is established.

　　9) Since the raising of most crops necessitates the prior removal of the natural vegetation, crop failures leave extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion.

　　10) The cinema did not emerge as a form of mass consumption until its technology evolved from the initial "peepshow" format to the point where images were projected on a screen in a darkened theater.