In finland,about 70 percent of the land ___ covered with forests.A.is B.are C.be D./ 是不是选A?

题目

In finland,about 70 percent of the land ___ covered with forests.A.is B.are C.be D./ 是不是选A?

答案

选A
70%的土地,是不可数名词,用is
这里是被动语态
芬兰70%的地表被森林覆盖.