扫描二维码，直接登录
那请问A不冗余的话，为什么错了呢
research on，我的理解是：research接直接的研究对象，研究某种方法/治疗方案等通过研究总结以后得出的结果，可以用research+介词，以及research做名称时，+介词+研究对象
written肯定是做定语修饰book的
要是状语的话，其主语应该是professor了，不是JB
我也是这么排除的，comma+-ed,逻辑主语是整个句子的主语，
对象错误，所以我就排除呢
因外research 有及物和不及物，不能根据不及物排除做的吧
是的！同学的解释重点很对！
e比较对象不正确。it is likely that中的it是形式主语，指代that后面的一整句话，那么整句话的意思就是：“retirees give children aid这件事" is four times as likely as “retirees” are likely to do sth
茅塞顿开 谢谢老师
老师，“retirees give children aid这件事" is four times as likely as “retirees” are likely to do sth 我怎么觉得这两个比较没问题呢？
retirees give 这件事 as likely as retirees to do
retires will give和 they are不平行
(That retirees in the united status will give their children regular financial aid) is four times as likely as (they are) to receive it from them. 比较的对象是that从句与they (retirees)
多谢
the correct comparison as much . . . as.
Problem with B - resulting in wood now costing eight times as much to collect and distribute as in 1960 ----wrong comparison.
请问B in 1960 不能和now平行吗，和D的区别是在哪呢
B的平行是对的。B错在resulting in wood，这个表达有歧义，now costing eight times as much to collect是修饰wood的，在GMAT中，这种修饰需要拿掉再去看，如果拿掉的话，句子就直接变成了resulting in wood，无意义。
同意！赞！
谢谢你
同意！谢谢大佬！