1. They might die young
2. The study showed that antioxidant pills can upset the body’s stress-response mechanism and make young people age more quickly.
3. It can damage cells in a process similar to the rusting of metal.
5. The idea that antioxidants slow down the ageing process, cure diseases or prevent cancer.
6. (i) F
7. to strengthen the RRC capability.
8. How two people of the same age can age at different speeds.
9. Another professor (San Jianli, a cell biologist at Beijing Normal University) said Chen's findings "make perfect sense".