单选题
Of all the continents in the world, ______ seems to have the smallest number of illiterates.
【正确答案】
D
【答案解析】细节辨认题。由第三段"The major areas of illiteracy are in Asia, Africa, and Central and South America"可以得知Asia, Africa, and Central and South America 世界上 illiteracy 的主要地区。