Knowledge, Wealth and Health
1. Compared with less developed countries, more developed countries have lower
A: pupil/teacher ratios.
2. An important reason for the large number of retired people in developed countries is their
A: more stable social safety net.
3. Which of the following regions has the lowest life expectancy at birth?
A: sub-Saharan Africa
4. Which of the following consumer goods has most affected developing nations over the past 20 years?
A: the cell phone
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