背話題佳句：
1.If wildlife disappeared from the earth, the environment and climate would be badly changed, the ecological balance would be broken and the biodiversity would be lost.
如果野生動植物從地球上消失，環境和氣候將會變差，生態平衡會被破壞，生物的多樣性會消失。
2.We believe as long as we take action immediately, we will live in harmony with wildlife.
我們相信，只要我們馬上行動起來，我們就可以和野生動植物和諧相處。
3.It’s time we took measures to protect the river from being polluted.
是我們采取措施防止這條河流被污染的時候了。
4.The number of plants and animals on the earth is becoming smaller and smaller.
地球上的植物和動物的數量正變得越來越少。
5.Air and water are being polluted so that the environment in which animals live is destroyed.
空氣和水正受到污染，結果動物生存的環境被破壞。
6.Elephants would be in danger of dying out if men were allowed to shoot them as many as they wished.
如果再允許人們隨心所欲地射殺大象，大象就會有滅絕的危險。
7.With only about 1,000 pandas left in the world,China is desperately trying to clone more pandas and save the endangered species.
由于世界上僅存約1000只大熊貓，中國正全力地試圖克隆更多的大熊貓以拯救此瀕危物種。
背話題詞：
1.live in harmony with nature與自然和諧共處
2.be kind to nature 善待大自然
3.the rules and laws of nature 自然規律
4.keep ecological balance 保持生態平衡
5.maintain biodiversity 保持生物多樣性
6.lose the habitats 失去棲息地
7.conserve natural habitats 保護天然棲息地
8.nature conservation 自然保護
9.endanger the lives of 危及……的生命
10.wild animals and plants 野生動植物
