the story is short and there are few new words in it it is difficult to understand.A. Th

问题补充：

the story is short and there are few new words in it, it is difficult to understand.

A. Though

B. When

C. For

D. If

答案：

(答案→)A. Though

B. When

C. For

D. If

解析：将连词都带进，根据句子意思。故选A，