单项选择题

Sub-Saharan African countries______.

A．will have the largest world population by 2020
B．have the highest reproductive rate in the world
C．are only modestly affected by AIDS
D．will have increasingly long life spans

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热门试题

单项选择题

The population growth rate in the US is______.

A．higher than that in India
B．lower than that in Mexico
C．higher than that in Indonesia
D．lower than that in South America

单项选择题

What is the author's attitude towards Afghanistan and U.S governments' policy

A．Critical
B．Supportive
C．Neutral
D．Pessimistic