1 . Only when we learn to exist in ______(和谐共处) with nature can we stop being a threat to wildlife and to our planet. (根据汉语提示单词拼写)

2 . Her ________(哲学) of life is to take every opportunity that presents itself. (根据汉语提示单词拼写)

3 . Social evolution always takes place in the ________ (困境) of economic development and cultural preservation. (根据汉语提示单词拼写)

4 . Sarah chose to take the stairs and when reaching the 20th floor, she felt out of b___________. (根据首字母单词拼写)

5 . Take care of your ________(所有物) when you are at the train station. （根据汉语提示单词拼写）

6 . The elderly man made unbelievable ________ (贡献)towards reducing industrial accidents in the last century.(根据汉语提示单词拼写)

7 . Our lives may be changed beyond ______(认出)by 3D printing in the near future. (根据汉语提示单词拼写)

8 . If goods are in short s________, the price will be high.(根据首字母单词拼写)

9 . I would be grateful if you could offer me an o_______to attend your university. (根据首字母单词拼写)

10 . Working as a ______ (志愿者) can help a student learn something more valuable than what they learn in the classroom. （根据汉语意思单词拼写）