Outline:
1. Necessity of economic reform
2. The benefits brought about by economic reform
3. Economic reform should continue

A．they are larger in size
B．they are closer to the earth
C．they are larger in number
D．they are easier to change their orbits

A．Keeping higher levels of functioning throughout adulthood can guarantee high performance in old age.
B．Coronary heart disease can change cognitive abilities greatly.
C．All the people have more or less the same intellectual change over the tire span.
D．Changes in environment can affect the intellectual functioning for many peopl