Mr.G为什么最后没有吃到东西？
A. Because I said please.
Because it didn't say please.
C. Because I didn't say thank you.
D. Because I said thank you.
(),but you didn't () "thank you"
对于出口商而言，D/P的风险要高于D/A。
A. 对
B. 错
低碳经济的发展模式是在（）将传统经济发展模式改造成低碳型的新经济模式
A. 实践中运用低碳经济理论
B. 低碳发展
C. 节能减排
D. 碳中和技术
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