What does the phrase these problems” in paragraph 2 refer to?

Câu hỏi :

What does the phrase “these problems” in paragraph 2 refer to?

A. industrialized countries

B. lots of jobs and living spaces

C. immigrants

D. negative physical health effects

* Đáp án

D

* Hướng dẫn giải

Dẫn chứng: ...see more negative physical health effects than modern countries in regard to urbanization. One example of a developing country experiencing these problems is China. 

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