there will be a heavy rain she takes a raincoat with her.A. Because; so B. So; becauseC

问题补充：

there will be a heavy rain, she takes a raincoat with her.

A. Because; so

B. So; because

C. Because; /

D. So; /

答案：

A. Because; so

B. So; because

(答案→)C. Because; /

D. So; /

解析：句意：因为将有一场大雨，因此她随身带了一件雨衣。Because是状语从句的关系词，so是并列句的关系词。二者不能同时用。根据语境可知选C。

考点: 考查连词的用法。