Sandstorms hit N China

来源:新闻中心
创建时间:2010年03月22日
状态:已结束
What is to blame for the severe sandstorms that hit N China this spring?
  1. Drought.
    50.0%
  2. Urbanization.
    33.3%
  3. Overgrazing.
    16.7%
What is to blame for the severe sandstorms that hit N China this spring?
状态:已结束  当前时间:2024-03-29 14:23:45