Taking regular exercise and eating a balanced diet are two important keys ________ good health.

Ain Bfrom

Cof Dto

 

D

【解析】D 考察介詞。句義:定期做運動和保持均衡的飲食是保持身體健康的兩個關(guān)鍵點。Key意為關(guān)鍵,鑰匙;后面接介詞to,故答案為D

 

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