国务院召开地处长江流域各省省长会议议论长江污染治理问题，这种协调属于（）。
A．合作式协调
B．应变式协调
C．外部式协调
D．促进式协调
参考答案：A
— Have you heard of Earth Day?
— Yes. The first Earth Day _____ in 1970 to educate us to protect our planet. [ ]
A. celebrates
B. celebrated
C. is celebrated
D. was celebrated
验证报告的内容包括哪些？
