There are no easy answers to questions brought to us by the rapidly changing world, _______ we can try to turn challenges into opportunities.A. so B. but C. for D. then详细解答!

There are no easy answers to questions brought to us by the rapidly changing world, _______ we can try to turn challenges into opportunities.A. so B. but C. for D. then详细解答!
There are no easy answers to questions brought to us by the rapidly changing world, _______ we can try to turn challenges into opportunities.
A. so B. but C. for D. then详细解答!

There are no easy answers to questions brought to us by the rapidly changing world, _______ we can try to turn challenges into opportunities.A. so B. but C. for D. then详细解答!
B. but
前后半句带有明显的转折语境.
翻译如下：
飞速发展的世界给我们打来的（困难）挑战没有简单的解决办法,但是我们可以化挑战为机遇.

B