---Look! There is beautiful rainbow in the sky-Wow it’s so beautiful. I’d like to tak

问题补充：

---Look! There is beautiful rainbow in the sky．

---Wow, it’s so beautiful. I’d like to take a photo ofrainbow before it disappears．

A. a; the

B. the; a

C. the; the

D. a; a

答案：

(答案→)A. a; the

B. the; a

C. the; the

D. a; a

解析：句意：看，天上有道彩虹。是啊，多美呀。我想趁这道彩虹消失之前给它拍张照片。冠词a一个，表示泛指，定冠词the表示特指，也可复述上文提过的人或事物。