1. Every __ in science helps you gain new knowledge.(success)
2. __; he survived the crash without injury. (miraculously)
3. We are faced with a difficult ___ (choice)
4. Do you need a ___ memory to become a scientist?(miraculous)
5. It will take a long time to find out a thorough __ to this problem.(solution)
6. Paper money is used (increasingly) __ in the modern world.
7. (education) __ is very important for everyone.