of the land in that district covered with trees and grass. A. Two fifths; isB. Two fifth

问题补充：

of the land in that district covered with trees and grass.

A. Two fifths; is

B. Two fifth; are

C. Two fifth; is

D. Two fifths ; are

答案：

(答案→)A. Two fifths; is

B. Two fifth; are

C. Two fifth; is

D. Two fifths ; are

解析：考查主谓一致和分数表达法。当分子大于等于二的时候，分母的序数词使用复数形式，根据这一点排除BC。分数百分数做主语的时候，如果后面的名词是不可数名词，谓语动词用单数，如果后面的名词是可数名词复数形式，谓语动词用复数。故A正确。