题目内容

Watch the video clip "Urbanization and the future of cities"and answer the following questions.What lead to the development of the first semi-permanent settlements?

A. Changes in the global climate
B. An increase in fresh water supplies
C. Improvements in healthcare
D. Advancements in agriculture

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Watch the video clip "Urbanization and the future of cities"and answer the following questions.Which of these technologies developed because of the desire to trade with other cities?

A. Tractors
B. City walls
C. Roads
D. Aqueducts

Watch the video clip "Urbanization and the future of cities"and answer the following questions.Why did people first move into cities?

A. Jobs
B. Fun
C. Safety
D. More farmland

Watch the video clip "Urbanization and the future of cities"and answer the following questions.The global population is expected to peak at ___ billion.

A. 7
B. 6
C. 9
D. 10

绘制多边形命令，能绘制多边形的边从3到多少？

A. 5
B. 100
C. 200
D. 1024