问题详情

What did the Secretary-General talk to a group of students at U. N. headquarters？

A．He hoped the students to promote America"s role in reducing gas emissions.

B．He expected the American government to participate in the Kyoto treaty.

C．He praised America"s role in reducing greenhouse gas emissions.

D．He criticized America"s reluctance in joining in the Kyoto treaty.

请帮忙给出正确答案和分析，谢谢！