(单选题)

Why is changing career becoming a necessity? ( )

A.As new industries arise, the popularity of different careers also change.

B.Nowadays people don’t know what they really want to do.

C.Because changing careers is becoming more popular.

D.Because one could have as many as nine careers in his professional lifetime.

参考答案：A

参考解析：

细节题。通过necessity定位到第一段第三句话“As new industries arise, others die. It’s up to you to figure out if your career is still going to be around in the next 5-10 years.”可知正确答案为A。由于新行业兴起，旧的行业逐渐消退，流行职业也会随之改变。B选项文章没有提到；C选项是一个社会现象，不是原因；D选项是文章在叙述职业变更原因之后才提到的一个研究成果。故本题正确答案选A。

知识点：细节题英语阅读理解通用英语