绝对应该选A - 说新旧study(人们是否能采用both technology)都是为了这个proposal是否可行服务
第一个sutdy是为proposal服务的,而不是因为第一个study提出了proposal(选D的同学有一个假设:previous findings of the first study are already used in one situation)而文中的先后顺序是:先提出proposal,再去发现这个proposal中的technology在市场经济中适用,而在雨林经济中不适用 所以D选项只是A选项的一个小集合~ 而且D这个one set of situation和another set of situation选项很模糊:previous findings concerning one set of conditions may not be generalizable to another set of conditions其实最后一句就说了They found that longer residence correlated with more adoption of improved plant varieties but less adoption of chemical herbicides. 只是说随着居住年限的增加,雨林人不使用农药,而他们却更多的使用了“多种栽培”,所以findings并不是都may not be generalizable to another situation They found that longer residence correlated with more adoption of improved plant varieties but less adoption of chemical herbicides. 只是说随着居住年限的增加,雨林人不使用农药,而他们却更多的使用了“多种栽培”,所以findings并不是都may not be generalizable to another situation |