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--- What's thirty and fifteen? 

--- It’s _______


  1. A.
    eighty
  2. B.
    forty five
  3. C.
    Twenty-eight
  4. D.
    forty-five
D
考查基數(shù)詞的表達(dá)法。意思:三十加十五等于多少?四十五。forty-five中間要用連字符,故選D。
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