关于 指代的题目 求NN解释一下

顾宝宝

zoeeeeeeee_ 发表于 2016-10-22 19:33
这个题选B吧 我正好看到这个提了答案选的b

A

浪浪

brfmzbjz 发表于 2014-7-22 23:00
Between 在 global economy 之后 才是修饰 global economy
才应该算进it的完全指代

（来自Ron）there's nothing ungrammatical about 'from when', because the clause starting with 'when' is a perfectly legitimate noun clause (i.e., 'when agriculture began' serves as a noun. however:
- it's possible that the gmat does consider such constructions wrong; the only way to tell is to see if they say so in any official answer choices
- regardless of where the gmat stands on the issue, 'the beginning of agriculture' is unquestionably better than 'when agriculture began' (i.e., an actual noun is almost always superior to a circuitous noun clause, when possible)