an important decision more on emotion（情感）than on reason, you will regret it sooner or later.
A. Basing
B. Based
C. To base
D. Base
网友回答
(答案→)A. Basing
B. Based
C. To base
D. Base
解析：
试题分析:考查非谓语动词。Base是及物动词，而且句子主语you和动词base之间是主动关系，所以用现在分词做状语，答案选A。句意：如果你凭感情而不是靠理智来做出重要决定的话，你迟早会后悔的。