TOEFL Reading

❓ Question According to the passage, why are ecosystem services often degraded?

A. A) They are too complex to be studied by economists.
B. B) They are public goods without clear property rights, leading to undervaluation.
C. C) They primarily provide cultural benefits that are not tangible.
D. D) They have already been fully valued in the economic market.

B) They are public goods without clear property rights, leading to undervaluation.

📝 免费在线练习

基于 700+ 托福真题题库 · 即时对错反馈

⚠️ 点击选项立即查看对错。建议先仔细阅读上方听力/文章再作答。

📝 题目：

加载中...

📚 TOEFL Prep Books

Official TOEFL iBT Tests Vol.2

View on Amazon →