Desertification.the name for happens when farmable land is turned into desert.is

Desertification，the name for ______ happens when farmable land is turned into desert，is a growing world problem.

A. which          B. where              C. what               D. How

试题答案

C

解析:

主要测试宾语从句。---的现象what的“什么”意思。译文：可耕种田地变成沙漠时发生的沙漠化现象是日益增长的世界性问题。