Question

We can never expect    bluer sky unless we create     less polluted world.

A. a; a                             B. a; the              C. the; a                          D. the; the

Answer 1

A

解析:

sky和world原本是獨(dú)一無(wú)二的,但這里前面都有了形容詞修飾,表示會(huì)出現(xiàn)一個(gè)什么樣的sky和world,這里就屬于泛反指了.