— The number of pandas is getting because their living areas are becoming polluted. — So w

— The number of pandas is getting because their living areas are becoming polluted.
— So we must do something to protect them.
A. less and less
B. larger and larger
C. smaller and smaller
D. fewer and fewer

A. less and lessB. larger and larger(答案→)C. smaller and smallerD. fewer and fewer解析：句意：——因为熊猫的生活地区正在被污染，熊猫的数量正越来越小。——因此我们采取措施保护他们。A. less and less 越来越少；B. larger and larger 越来越大； C. smaller and smaller 越来越小； D. fewer and fewer越来越少。修饰名词number用形容词large和small。结合句意，故选C。

这个解释是对的