After three years of preparation for the 2011 Xi’an International Horticultural Expo (西安园博会），the city is presenting the world______ many people think is the green Special Olympics．A.thatB.whichC.whatD.where
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C解析本题名词性从句。题中是一个宾语从句，从句中is the green Special Olympics缺少主语，所以用what。故选C。