高二unit9课件ppt(nx)内容摘要：
ry. ④ …not buy… ⑤ …make …and use …to make sure that… Ladies and Gentlemen, Today we are celebrating Earth Day. Earth Day is a day for reflection and action. Today, people in countries all over the world get together to discuss the earth and our future, and to take action to improve the current situation. Earth Day is a chance for us to learn about the world and change our behavior, it helps me understand that we must act. If I had known more about the earth in the past, I would have made different choices about what to do and what to buy. It is never too late to change. I am here today to talk about one of the most important problems we are facing. In my view, the most important challenge ahead of us is to find a way to protect the water on our pla. 75% of the earth is covered by rivers, lakes and oceans, so it is truly。阅读剩余 0%
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