Once SARS Appeared in China,how Long Did It Take for It

question 14

Multiple Choice

Once SARS appeared in China,how long did it take for it to reach nine other countries/provinces via air travel?

• A)3 months
• B)6 months
• C)1 year
• D)2 years
• E)5 years

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Definitions:

Life Expectancy

The average number of years that a person is expected to live based on demographic factors, such as year of birth, current age, and sex.

Death Expectancy

A statistical measure often mistaken for life expectancy; technically NO direct term, but life expectancy correctly denotes the average number of years a person is expected to live.

Average Age

A statistic that represents the mean age of a population, reflecting the age distribution of that population.

Disabled People

Individuals who have physical, mental, intellectual, or sensory impairments which, in interaction with various barriers, may hinder their full and effective participation in society on an equal basis with others.