A．some flies avoided the fruit without an addictive
B．some flies preferred the fruit with an addictive
C．the eggs of the flies were not damaged
D．the impact on the flies did not last long
A．long-lived flies are better at laying eggs
B．long-lived flies are poorer in learning
C．learned flies have a relatively long life
D．learned flies live as long as average ones
A．reduces oxygen consumption
B．regulates the nervous system
C．speeds up the ageing process
D．stabilizes the ageing process
A．the research findings need to be tested further
B．biologists are doing similar research on other animals
C．the animal world usually follows the same universal laws
D．biologists are applying their findings to other areas