题目内容
（请给出正确答案）
[单选题]
People in modern societies have to be creative and adaptable.
A.在现代社会,人们必须具有创造力和适应力。
B.在现代社会,人们不得不同时具有创造力和适应力。
C.在现代社会的人们必须能创造和能适应
D.现代社会的人必须具备创造力和适应能力。
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When the writer says we cannot return to the good old days, he means that ______.
A．our society is becoming much worse than before
B．in our modern society it is hard to lead a quiet life
C．the old days were much happier than the present time
D．it is impossible for us to reduce noise back to previous levels
