________you eat the correct foods ________ be able to keep fit and stay healthy.

A. Only if; will you B. Only if; you will

C. Unless; will you D. Unless; you will

 

A

【解析】

試題分析：考查倒裝。句意：只有食用合適的食物，你才能保持健康。only if只有，放句首時(shí)，用主句用部分倒裝，把will/do/can等提到主語之前，排除B；unless相當(dāng)于if not，主句不用倒裝，排除C；D項(xiàng)應(yīng)該把will改為won’t，故選A。

考點(diǎn)：考查倒裝

 

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