老烤鸭雅思-专注雅思备考

雅思口语part3: Do you think it is necessary to make environmental protection as a subject 你认为有必要将环境保护作为一个学科吗？ Yes, I believe so. Protecting the environment needs a lot of specialist knowledge. Take PM 2.5 for example, which has caused various problems in China. To alleviate th ...