Question

—Look! There is         beautiful rainbow in the sky．
—Take the books for me, I’d like to take a photo of     rainbow before it disappears．

A．a; the

B．the; a

C．the; the

D．a; a

Answer 1

A

试题分析：句意：看！空中有一道漂亮的彩虹。帮我拿一下书，我想在它消失之前拍一张这道彩虹的照片。根据句意应该是指此刻空中出现的一道彩虹，表泛指，用不定冠词a，而第二句说在这道彩虹消失前给它拍张照，表示特指这道彩虹，用定冠词the，故选A。