例如剑桥五-2 BAKELITE文章倒数第三段:The original patent outlined a three-stage process, in which phenol and formaldehyde (from wood or coal) were initially combined under vacuum inside a large egg-shaped kettle……
因果段落具有明显的连接词来表示其中的关系,例如therefore, as a result, because, thus, hence等。对于这样的段落,通常会考查T/F/NG判断题、多选题或填空题。例如剑五-4 THE EFFECTS OF LIGHT ON PLANT AND ANIMAL SPECIES第三段:Breeding seasons in animals such as birds have evolved to occupy the part of the year in which offspring have the greatest chances……Thus many temperate-zone birds use the increasing day lengths……
例如,剑六-2第三段:Clearly, certain diseases are beating a retreat in the face of medical advances. But there may be other contributing factors. Improvements in childhood nutrition in the first quarter of the twentieth century, for example, gave today’s elderly people a better start in life than their predecessors.
再例如,剑七-2 THE TRUE COST OF FOOD第二段:First mechanization, then mass use of chemical fertilizers and pesticides,……But the damage it has caused has been colossal……
剑七-3 ANT INTELLIGENCE第四段:Or have they? The farming methods of ants are at least sustainable. They do not ruin environments or use enormous amounts of energy. Moreover, recent evidence suggests that the crop farming of ants may be more sophisticated and adaptable than was thought.