【答案】There will be ________ red-crowned cranes in the world.

There will be ________ red-crowned cranes in the world.

A. less and less

B. a little

C. more and many

D. fewer and fewer

【答案】

D

【解析】

句意：世界上丹顶鹤的数量将越来越少。比较级+ and+ 比较级：越来越…，less and less意思是越来越少，less是little的比较级，修饰不可数名词， fewer and fewer意思是越来越少，修饰可数名词复数，C是错误的表达方式；a little一点，少许，修饰不可数名词，也可作“一个小…”讲，后面跟可数名词单数。cranes是可数名词复数，结合句意和语境可知选D。