the problem of land erosion(侵蚀) getting more serious the government is searching for a wa

问题补充：

the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it.

A. As

B. When

C. With

D. If

答案：

A. As

B. When

(答案→)C. With

D. If

解析：考查独立主格结构. As 作为,由于;When当……时；With带有，伴随；If是否，如果。随着陆地侵蚀问题变得更加严重，政府正在寻求新的方法来处理。结合语境可知选C。