Thenumberofrarered-crownedcranesisgetting

问题详情：

The number of rare red-crowned cranes is getting __________and there is __________ living space for them. We should do something to protect them.

A. fewer ; smaller          B. smaller; less              C. smaller; fewer           D. fewer; less

【回答】

 B  

知识点：形容词比较级

题型：选择题