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
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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
阵列经典模式的调取命令是什么
ARRAY
B. ARRAYCLASSIC
C. ARRAYRECT
D. ARRAYPATH
尺寸界线采用的线型是
A. 实线
B. 虚线
C. 点划线
D. 多段线