As a result of destroying the forests, large ______ of desert ______ covered the land.

A.number; has

B.quantities; has

C.number; have

D.quantities; have

答案及解析： D

解析：

考查主谓一致。Large number of 后面要跟可数名词复数，而desert是不可数名词，排除A,C；

large quantities of+不可数名词作主语，谓语动词和quantities保持一致，要用复数。所以选D。