We all think that the ________ century will bring us more hopes．


  1. A.
    twenty-first
  2. B.
    twentieth-first
  3. C.
    twenty-one
  4. D.
    twentieth-one
A
該題考查序數(shù)詞的構成方法．把多位數(shù)基數(shù)詞改為序數(shù)詞時只將個位數(shù)改為序數(shù)詞即可．
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