____of the land in that district____ covered with trees and grass.
A．Two fifths；isB．Two fifth；are
C．Two fifth；isD．Two fifths；are
A

試題分析：句意：那個地區(qū)五分之二的土地被樹和草覆蓋。分?jǐn)?shù)表達(dá)法：分子用基數(shù)詞，分母用序數(shù)詞，分子大于1時，分母后加s，故2/5讀作two fifths. 本句主語是land （土地）不可數(shù)名詞，謂語動詞用單數(shù)形式is covered 故選A。
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