单选题 The report of UNESCO tells us a reality that ______.

A、 the development and the developing countries face a common problem
B、 literacy is not a by-product of social and economic development
C、 our view of literacy is very limited
D、 illiterates constitute a large part of the world population

【正确答案】 B

【答案解析】第二段UNESCO report presents a world view of literacy，第三段又具体阐述了它的看法，选项B的内容包含在内。