单选题 We learn from the passage that an emotion is created by something ______.

【正确答案】 A
【答案解析】[试题分析] 事实了解题。
[详细解答] 本题答案可从第一段第一句话中“…an emotion is amused when a man or animal views something as either bad or good.”中得出,人的情绪是由对好坏的判断产生的,因此,答案为A。