A2 部分答案
3 2 5 4 1
A3 部分答案
1 In 1946.
2 Because many children's lives were changed because of World War Ⅱ, and UNICEF wanted to help them.
3 It works in over 190 countries and areas.
4 UNICEF provides clean water and food. It also provides basic education for poor children in many countries.
5 It raises money by selling Christmas cards and organizing other activities.