Nearly all our clothes are made from fibers of one sort or another, if they are derived from plants, animals, coal or petroleum.

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问题 Nearly all our clothes are made from fibers of one sort or another, if they are derived from plants, animals, coal or petroleum.

选项 A、despite they are derived
B、be they derived
C、whether are they derived
D、they be derived

答案B

解析 几乎所有的衣料都是由某种纤维制成的,无论这些纤维是取自植物、动物、煤,还是石油。本句考查重点是主从句的语法关系。题干画线部分的if引导假设条件句,意为“如果……”,在逻辑关系上与主句不匹配。要符合句意,画线部分应改为让步状语,比如no matter whether they…,与它意思相近、用法更正式的表达是be it/they…,这是古英语在虚拟语气中的残存,故B选项正确。A选项的despite后跟从句,常用despite the fact that…,表示“尽管”,语义与本句不匹配;C选项和D选项的语序错误。
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