考点:First mechanism, then mass use of chemical fertiliser and pesticides, then monocultures, then battery rearing of livestock, and now genetic engineering – the onward marching of intensive farming has seemed unstoppable in the last hal- century, as the yields of produce have soared. (C7, P44, Q15)
解析:段首句连用表示次序的信号词,first, then, then… and now, 体现发展的不同阶段。(the stages of development of farming industry C7 P77 选择配对)
以上只是粗略概括了信号词对于雅思阅读过程中的作用,具体应用还需要考生多加练习和揣摩,找出适合自己的阅读方法。希望这些内容能给大家带来帮助。