Question

The number of red-crowned cranes is getting ___________.

A．small and small	B．little and little
C．smaller and smaller	D．less and less

Answer 1

C

考查比較級的用法。句意“丹頂鶴的數(shù)量正在變得越來越少�！薄氨容^級+and+比較級”表示“越來越......”。less修飾不可數(shù)名詞。small和big用來指數(shù)量的多少。故選C。