51,原文的结论是:no less plasticrefuse per container is produced when such containers are discardedthan when comparable nonbiodegradable containers are discarded. 降解容器留下的塑料垃圾不必非降解的少。也就是说至少两者留下的垃圾是一样多的,或者非降解大于等于非降解。根据结论找选项有管无关就好了啊。 (B) The partially biodegradable plastic beverage containers are madewith more plastic than comparable nonbiodegradable ones in order tocompensate for the weakening effect of the bonding agents. 为了补偿粘合剂差的效果,降解塑料容器要用更多的塑料。完全符合啊。 a选项我是这么理解的:两者都能被压平,说明两者在某些属性是一样的,但是两者的塑料含量是否一样多,选项没有给出,所以也不好推断。 -- by 会员 sunyan730 (2009/12/7 23:57:54)
所以我就不明白既然两者某些属性差不多,为什么og能解释另外一种含有的塑料更少... |