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10．毫無疑問，電腦在技術和商業領域中很有使用價值．
There's no doubt that computers are veryusefulintechnologyand business．

分析 useful； technology

解答答案：useful； technology．根據中英文對照得知本句的句型是be useful in表示在某方面有用，in是介詞后加名詞代詞或動名詞，這里加上名詞technology表示技術．故答案是useful； technology．

點評本題注意句型be useful in的用法及單詞"技術"的拼寫．

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