X.
1. D (Thông tin ở đoạn 1: "In developing countries, people are sometimes unaware of the importance of education, and there is economic pressure from those parents who prioritize their children's, making money in the short term over any long-term benefits of education.")
2. A (Thông tin ở đoạn 1: "...where families are able to provide for their basic needs, parents return their children to school.")
3. C (Thông tin ở đoạn 2: "a lack of good universities and a low acceptance rate for good universities are evident in countries with a relatively high population density.")
4. B
5. D (an education satellite; ail initiative supported by several major corporations to develop a $100 laptop; an "e-school program"; An International Development Agency project started with the support of American President Bill Clinton uses the Internet to allow co-operation by individuals on issues of social development)