There is a universial official formula to decide the tiers of the cities.
举一反三
- How many cities<br/>will have air quality monitoring systems installed by the end of this<br/>year?() A: 42 cities. B: 220 cities. C: 150 cities. D: 262 cities.
- Many Americans want to have their homes outside the cities and their jobs in the cities.
- Why are Boston and Chicago mentioned A: To demonstrate the development of big cities. B: To exemplify cities with and without mass transportation C: To show mass transportation changed many cities. D: To contrast their rate of growth and development.
- Based on Section E, decide whether the following statement is TRUE, FALSE or NOT GIVEN. Cities are always bigger in Asia than those in Europe.
- A researcher decide to draw the entire sample from one "representative" city, and the population includes all cities. the researcher must be confident that the chosen sample is truly representative of the entire population. This is belonging to ().