来自曼哈顿论坛的答案the statement intends that the research is being done on two things: 1. the nature of language 2. the processes that produce it and make it understandable These two should be parallel. This leaves us with a singular subject "Research", so we should use "has". Options B,D and E get eliminated. Among A and C, I would go with A because C is using the awkward construction "has reveled not underlying simplicity but great complexity" -- by 会员 迷失深蓝 (2012/10/11 22:49:06)
我也搜到了,可是M上的解答除了大神的,路人的也不一定是权威的~ |