6．He can't run fastonaccount of his heart trouble．

分析 由于心臟病他不能跑的太快．

解答 答案：on
此題考查固定短語(yǔ)，on account of表示"因?yàn)椋捎?，如：She retired early on account of ill health．
她體弱多病，所以提前退休．

點(diǎn)評(píng) 考查單詞填空，準(zhǔn)確地理解題意、然后根據(jù)題意及提示確定所填單詞詞形，正確寫(xiě)出單詞完成答題．

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科目：高中英語(yǔ) 來(lái)源： 題型：信息匹配

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