关于x的方程5x-2m=-4-x的解x满足2<x<10,求m的取值范围。
解:解方程得x= ,因为2<x<10,8<m<32。
根据句意和词首字母完成句中所缺的英语单词。
1. Can you tell me the four famous inventions in a_____ China?
2. Lu Xun was one of the greatest writers in the 20th c_____ of China.
3. Please keep the room clean. And don't t_____ the waste paper everywhere.
4. James noticed two policemen coming t_____ him.
5. Chicago d_____ into a big city in the late 1800s.
影响城市发展的各种区域性因素包括( )。
A.区域的公共设施水平
B.区域的基础设施水平
C.区域发展的条件差异
D.区域整体的经济社会发展水平
E.区域自然条件与生态承载能力