1. (2018高二下·徐州期末) 听下面一段独白，回答以下小题。

1. （1） Why did the speaker feel sad along the way?

   A . There were no sheep on the grassland. B . It was too cloudy to travel that day. C . The grassland was becoming a desert.
3. （2） What animals do the greatest damage to the grass?

   A . Cattle. B . Horses. C . Sheep.
5. （3） What will the speaker do next?

   A . Plant some trees at home. B . Make some suggestions for others. C . Try to solve the problem alone.