(单选题)

According to the passage, what mistake do many people make?

A.They live in fear of getting cancer.

B.They are not active enough in trying to avoid cancer.

C.They do not take the risk of getting cancer seriously enough.

D.They believe cancer is caused only by environmental factors.

参考答案：A

参考解析：

细节理解题。根据原文第一段第五句“Many of these people are living in fear of the disease without realizing that the kind of passivity this misconception encourages is actually increasing their chance of getting cancer by discouraging important lifestyle choices—changes in behavior that could decisively tilt the odds in their favor”可知，这些人中的许多人生活在对疾病的恐惧中，却没有意识到由此产生的消极态度实际上增加了他们患癌症的机会。故选A。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语