--How many people will e to Beijing for the Olympic Game in 2008?--It’s hard to say. ________ people, I think.A.Million ofB.Millions ofC.Two millions ofD.Two million of
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B解析hundred, thousand, million, billion在表示模糊数字时，两“有”（有s，有of，如thousands of成千上万）；在表示确切数字时，两“无”（无s，无of，如five thousand magazines）。