A.urban expansion
B.socio-economic disparities
C.disease
D.unsanitary conditions

A.It minimizes risks for economic, cultural and societal development.
B.It makes water supply system effective.
C.Weather and climate in the city will be much improved.
D.People may come up with new ideas for innovation.

A.Urbanization brings important benefits for development as well.
B.54% of the world's population will live in cities by 2050.
C.Risks cannot be addressed effectively no matter how well cities are governed.
D.Rapidly increasing population density can help solve poverty.

A.aimed at
B.dealt with
C.added to
D.agreed on

A.Poverty may be a foregone conclusion of unplanned urbanization.
B.Diseases are caused by people migrating to cities.
C.Urbanization can solve the problem of environmental pollution in cities.
D.The increasing number of people in cities can create more employment.

A.The Risks of Rapid Urbanization
B.Infrastructure and Economic Activities in Cities
C.The Global Risks 2015 Report on Developing Urban Areas
D.Rapid Urbanization Put Cities in Jeopardy

A.Fe3O4.
B.FeO.
C.Fe2O3.
D.Fe.

A.quarreled
B.respected
C.admired
D.regarded

A.Although increasing urbanization has led to problems, but cities are centers of civilization and culture.
B.In spite of increasing urbanization has led to problems, yet cities are centers of civilization and culture.
C.Despite increasing urbanization has led to problems, but cities are centers of civilization and cultures.
D.Though increasing urbanization has led to problems, cities are centers of civilization and culture.

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B.\(\left( {\pi ;\dfrac{{3\pi }}{2}} \right)\)
C.\(\left( {\dfrac{\pi }{4};\dfrac{{3\pi }}{4}} \right)\)
D.\(\left( {\dfrac{\pi }{2};\pi } \right)\)