"The key to____________the medical problems at the roots is health care reform" , said the minister.

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问题 "The key to____________the medical problems at the roots is health care reform" , said the minister.

选项 A、solve
B、solving
C、being solved
D、be solved

答案B

解析本题考查动名词。句意：部长说：“从根源解决医疗问题的关键在于医疗改革”。key做比喻义用，表示“答案”“解答”“秘诀”“关键”等时，其后的to是介词，后面接名词或动名词形式。所以此处应用动名词形式solving，答案选B。

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中学英语

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