Ex 8-1
1, revise: rethink
2, consider: regard
3, distinct: separate
4, concept: idea
5, demonstrate: show
6, contradict: refute
7, inherent: obvious
8, convert: transform
9, conduct: carry out
10, confirm: validate
Ex 8-2:
1, distinct
2, revise
3, confirm
4, concept
5, inherent
6, convert
7, conduct
8, contradict
9, demonstrate
10, consider