单项选择题

同一轨迹在不同坐标系下，一般有不同的方程。（） A. 对 B. 错

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Topic: Life as a single child
Introduction:
• Introduce the background.
• State the thesis.
Body:
Support the main idea with personal experiences.
• The way parents and grandparents treated me
• My feelings of growing up as a single child in the family
Conclusion:
Restate the thesis.

答案： open

单项选择题

企业的碳足迹核算不包括______。
A、范围1
B、范围2
C、范围3
D、范围4