Ⅰ.阅读理解
阅读下列短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。
A
In the 1930s，the people of the southern Great plains suffered through one of the worst disasters in history.
That April Sunday in 1935 started out beautiful.But later the wind picked up earth，and it looked like a huge black cloud.By the time it got to an area called No Man’s Land，the cloud was thousands of feet high.
