单选题
英语六级
2016-12-19
A．It will take a long time before a consensus is reached on its impact.
B．It would be more costly to deal with its consequences than to avoid it.
C．It is the most pressing issue confronting all countries.
D．It is bound to cause endless disputes among nations.
参考答案
B
答案解析
[B] It would be more costly to deal with its consequences than to avoid it.
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