Two-thirds of the land covered with green grass and the rest covered with pine trees.
A. is; is
B. is; are
C. are; is
D. are; are
网友回答
(答案→)A. is; is
B. is; are
C. are; is
D. are; are
解析：考察主谓一致。分数(百分数)+of+名词”结构作主语时，谓语动词的数与其中名词的数保持一致。Land为不可数名词，故后面用is。The Rest指代land的一部分，故谓语动词还是用is，选A。