The percentage of students who expect college education is higher now than that in the early 1980s by approximately

A．to investigate the issue of software piracy
B．to allow the suspects to make some profits
C．to require the suspects to cooperate with them
D．to grant leniency to the suspects if they are cooperating

A．Teens should take more calcium till they grow up to 30.
B．Less participation in sports presupposes less intake of calory.
C．Women should take less and less vitamin D when growing old.
D．Women should take more and more vitamin D when growing ol