原题是刘振民P70页5-11: the current administration , being worried over some foreign trade barriers being removed and our exports failing to increase..., has formed a group to study ways to sharpen.... B. worrying over some foreign trade barriers being removed, also over the failiure of our exports. 作者在下面解释B为啥错: 迅速排除B,因为also 不能做并列连词! 这里also 连接的也不是句子阿?