I have two dogs. black one is 2 years old and yellow one is 3 years old.A. The; theB. The

问题补充：

I have two dogs. black one is 2 years old and yellow one is 3 years old.

A. The; the

B. The; a

C. A; a

D. A; the

答案：

(答案→)A. The; the

B. The; a

C. A; a

D. A; the

解析：句意:我有两条狗.这条黑色的两岁,这条黄色的三岁.结合语境可知本题中都是特指某种颜色的狗,故都用定冠词the,选A.