中国大学MOOC: Will the people of Iran reward modernizing politicians who overcame 14 outliners to conclude the historic nuclear deal last year.

8. 绿色发展是构建现代化经济体系的必然要求，是解决污染问题的根本之策。 A: Green development is an indispensable ingredient of building modernized economic system and also a fundamental resolution of pollution. B: Green development is a critical element of modernizing an economy; it is also a fundamental solution to pollution.