The surface of the earth reflects enough of the sun’s light onto the face of the moon for us to be able to see the parts of it w

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问题 The surface of the earth reflects enough of the sun’s light onto the face of the moon for us to be able to see the parts of it which______.

选项 A、are otherwise dark
B、have otherwise been dark
C、would otherwise be dark
D、had otherwise been dark

答案C

解析 本题考查虚拟语气。otherwise构成跳层虚拟语气(或虚拟句),即这类型的句子在结构上分为两部分,一部分虚拟而另一部分陈述,且两者间由otherwise连接,虚拟句形式为“would+otherwise+动词原形”,故[C]项为答案。构成跳层虚拟语气(或虚拟句)的还有but、or、or else等。
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