—How about controlled breeding programme the US government began to save the red wolf?—I

—How about controlled breeding programme the US government began to save the red wolf?
—I should say it was success, you see its number has increased
A. a ; a
B. the; a
C. a;不填
D. the ; 不填

A. a ; a(答案→)B. the; aC. a;不填D. the ; 不填解析：考查冠词的用法。a/an表示泛指，意为“一个，某个”；the表示特指，意为“那个，这个”。success成功，不可数，但指“一件成功的事或一个成功的人”时，是可数名词，用a修饰，排除C、D；the+done/doing+名词，特指“那个......”。故选B。

好好学习下