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    Heart trouble is one of the most serious of death among old people. A. reasons B. troubles C. illnesses D. causes 【查看更多】

     

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    10. Heart trouble is one of the most serious _____ of death among old people.

           A. reasons             B. troubles             C. illnesses     D. Causes

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    Heart trouble is one of the most serious _____ of death among old people.

           A. reasons             B. troubles             C. illnesses     D. causes

    查看答案和解析>>

    Heart trouble is one of the most serious___________ of death among old people.

    A. reasons　　　　　　　　　　    B. troubles　　　　

    C. illnesses　　　　　　　　　　    D. causes

     

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    Heart trouble is one of the most serious___________ of death among old people.

    A. reasons　　　　　　　　　　    B. troubles　　　　

    C. illnesses　　　　　　　　　　    D. causes

     

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