2 . 保持进步和文物保护之间的平衡可能是巨大的挑战, 然而大挑战有时候会导致了不起的解决方案。
________and the protection of cultural sites can be a big challenge, but sometimes big challenges________.

3 . 他还建议每个学员都要重视工作与生活的平衡。
He recommends every trainee attach importance to________ ________ ________ ________.

5 . It was always ________ what you do as a mom and what you do as a career.
要平衡做妈妈和做一份职业总是一件让人挣扎的事

7 . 欢迎来到丛林，这是一片绿色的海洋，处处可闻各种动物的声音。作为世界最大的雨林，它在维系地球生态系统的微妙平衡上扮演着举足轻重的角色。
Welcome to the jungle, a huge sea of green ______ of animals...... As the largest rainforest in the world, it plays a significant role in ______ of the Earth’s ecosystem.

8 . 最后但同样重要的是，只有平衡工作与生活，我们才有可能获得光明的未来。
________, only by ________can we harvest a promising future.

9 . In a fast-paced society where competitions remain tough, many of us________________________________(很难更好地实现工作和生活的平衡). (根据汉语提示完成句子)

10 . The question is how we can ______________________________.
问题是我们怎样才能保持经济发展和环境保护的平衡。(balance)