GWD 23 31 寻求帮助

ekinok

Q31:

According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.

1. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems

2. threat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems

3. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems

4. threat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss

5. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat

答案是A，但是我想问一下C有哪里不对？

[此贴子已经被作者于2007-9-25 20:40:25编辑过]

mixtec

after losing their habitat
夹心修饰，逻辑不对，invasive plants怎么能losing their habitat呢？