Ⅰ. 单词拼写
1. It is hard to know the origin (起源) of the human race, that is, how the human race comes out.
2. People light incense before graves in memory (纪念) of their ancestors.
3. The homeless children were starving（渴望） for safety and love.
4. The story of his mother is beyond my belief (信任, 相信).
5. You’ll gain (获得) useful experience in working with computers.
