单选题：Today many countries are

题目分类：综合类
题目类型：单选题
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题目内容：

Today many countries are A．trying to find their own ways to measure happiness.
B．using the principles of GNH to measure their progress.
C．working together to develop a common scale to measure GNH.
D．taking both Bhutan and Brazil as symbols for social progress.

参考答案：

答案解析：

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分类：综合类题型：单选题