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It is reported that 40 percent of the land in Brazil________covered with trees.
A.isB.wasC.areD.were
A
答案 A [考查的是数量词作主语时的主谓一致。句意:据报道,巴西百分之四十的土地都有森林覆盖。40 percent修饰the land,the land表示“陆地”时是不可数名词,谓语必须用单数;又因为主句谓语动词是一般现在时,因此选A。]
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