Ⅰ. 单词拼写
1. The black people were no longer bought and sold as slaves after the slave trade was ________ (废除).
2. I don’t feel like getting involved in any New Year’s ________ (庆祝) at present.
3. This disease is thought to have ________（起源）in the tropics and can’t be cured completely.
4. As far as I’m concerned, all the foreign visitors will be ________（运送）to the Great Wall by coach next week.
