The Chinese Mo Yan won the Nobel Prize in literature (文学) and it cheers us up. A. a

问题补充：

The Chinese Mo Yan won the Nobel Prize in literature (文学), and it cheers us up.

A. artist

B. scientist

C. writer

D. singer

答案：

A. artist

B. scientist

(答案→)C. writer

D. singer

解析：artist艺术家，美术家；scientist科学家；writer作者，作家；singer歌手，歌唱家。句意：中国作家莫言赢得了诺贝尔文学奖，让我们很高兴。结合语境可知选C。