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No one________ be more generous;he has a heart of gold.         (2013·天津,9)
A.couldB.must
C.dareD.need
A
解析 考查情态动词。句意为:没人比他更慷慨;他有一颗金子般的心。“No one could be more generous”是否定词和比较级连用,表达最高级含义,A项could可以在否定句中表示推测,为正确答案。B项表推测,只用在肯定句中;dare和need不符合句意。
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