1. E. 关键词：unusual weather; severe ocean storm。
2. C. 关键词：C-C-X; the biggest owner of electric power producers。
3. A. 关键词：orangutans; some of the animals use sticks as tools to…。
4. D. 关键词：birds, insects and plants; wildlife。
5. B. 关键词：controls tropical rainforests; causing large areas of forest to disappear。
