Ⅰ.单词拼写
1．Always make your ________ (报告) just a bit shorter than anticipated.
2．To protect masses of endangered animals, a natural ________ (保护区) was set up in this remote mountain.
3．Having studied volcanoes for many years, I am still amazed at their beauty as well as their potential to cause great ________ (损害).
4．The local government had no effective way to ________ (使恢复) the supply of electricity, making citizens disappointed.
5．People should ________ (排放) less greenhouse gases and use renewable energy and reusable products.
6．The professor gave an appealing ________ (讲座) to new students, using slides to demonstrate.
