一道题

future

The use of chemical pesticides in this country is equally extensive or more so than ten years ago.
A  equally extensive or more so than ten years ago
B  equal to or more extensive than ten years ago
C  as extensive as ten years ago or more
D  equal to, if not more, than ten years ago
E  as extensive as it was ten years ago, if not more so

答案是(E),　　能说说为什么吗？

[此贴子已经被作者于2003-8-23 17:32:39编辑过]

7986

类似more than the previous year, more than ten years ago一般得改成more than it was..

future

还是不太明白，能在讲详细点吗？