【題目】The USA __________ on several countries in the past years, which reminds us that a nation must be strong if it __________.

A. has started war; is to survive

B. started war; is going to survive

C. had started war; will survive

D. has started war; is about to survive

【答案】A

【解析】句意：在過去的幾年中,美國已對幾個國家開戰(zhàn),這提醒我們要想生存,必須強大。in the past years在過去的幾年中，現(xiàn)在完成時的時間狀語;that引導(dǎo)的賓語從句中，條件狀語從句用一般現(xiàn)在時表將來。

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