单项选择题

The three scenarios described by Dr. Noack stand for ______.

A．three scenes that will appear in the continent of Africa
B．the migerable fate of Africa in three different aspects
C．three different kinds of fates Africa could have
D．three different societies of people in Africa

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单项选择题

The reason why poverty is one of the factors affecting the impacts of AIDS in Africa is that ______.

A．it's the biggest problem in Africa and leads to other problems
B．it makes it difficult for individuals and governments to fight the disease
C．the starving people are easier to be infected by AIDS
D．the AIDS pandemic can't afford the treatment because of poverty

单项选择题

By saying It's a two-horse race (Line 6, Para. 4), the author indicates that

A．the principals of those two schemes mentioned above are competing with each other
B．there are mainly two retailers of personal tax software in the present market
C．Intuit's Turbo Tax and H&R Block's Taxlut are the names of two horses known by everyone
D．those smaller retailers will be merged into the bigger ones in the nearest future

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