我感觉AC都对 为啥 A更加合适一点呢

问题如下：

Which of the following is most accurate about developed countries' economy growth?

选项：

Should rely on technological progress.

Need to improve capital per worker ratio

Need to increase capital deepening.

解释：

A is correct.

For developed countries, the capital per worker ratio is relatively high, so those countries gain little from capital deepening and must rely on technological progress for growth in productivity.

考点：Economic Growth and Sustainability

解析：发达国家的人均资本占有量已经很高，所以资本的边际收益递减倾向明显，此时想要通过该途径提高经济增长就很难。

所以发达国家更多的是要依靠技术进步提高经济增长。