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18．Yuan longping growswhat is called super hybrid rice．

分析袁隆平種植了所謂的雜交水稻．

解答答案是what．本題考查語境中使用恰當的詞或短語的適當形式．題干中動詞grow后面的賓語從句中缺少的是充當主語的引導詞；what在名詞性從句中做主語、賓語、表語或定語，故答案是what．

點評單詞填空必須在對語境整體理解的基礎上抓住指向答案的關鍵線索、固定句型或搭配等，同時注意所選詞的形式變化．

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