Why are distances becoming less

A．It helps to keep the eyes moist.
B．It helps the eyes absorb eye-drops.
C．It improves a person’s concentration.
D．It prevents a buildup of chemicals in the eyes.

A．Whether it is necessary to put labels on prepared foods.
B．What the daily requirements for certain nutrients should be.
C．How to get consumers to read labels more carefully.
D．What information food manufactures should provide to consumers.