Question

【题目】One-fifth of the area ________ covered with trees. About seventy percent of the trees ________ been planted recently.

A.is; hasB.are; haveC.is; haveD.are; has

Answer 1

【答案】C

【解析】

考查主谓一致。句意：三分之一的地区被绿树覆盖。已经种植了大约百分之七十的树木。当主语被分数或百分数修饰时，谓语和后面的名词一致。故选C。