30 % of the young trees, attacked by diseases, ________pine trees.A.isB.areC.wasD.has been-高三英语

题目简介

30 % of the young trees, attacked by diseases, ________pine trees.A.isB.areC.wasD.has been-高三英语

题目详情

 30 % of the young trees, attacked by diseases, ________pine trees.
A.isB.areC.wasD.has been
题型:单选题难度:中档来源:不详

答案

B
本题考查主谓一致,百分数+名词,其后的谓语动词与名词保持一致,故谓语动词用复数。句意:遭受病害3 0%的小树是松树。

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