Thousands of miles of ice, thousands of miles of snow - the cold winter in the north. The sky is blue, the fields are vast, the grass is blown by the wind and cattle and sheep are visible - the Inner Mongolia Plateau is flat and open. The desert is solitary, the sun is setting over the long river - the desolation and grandeur of the northwest region. It looks like mountains from a distance, and it looks like a river up close - the majesty of the Qinghai-Tibet region.
So choose: D.