单项选择题

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.
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单项选择题
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.
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.
单项选择题
A．Lack of variety.B．Full of varieties.C．Fresh but not delicious.D．Attractive and nutritious.
A．Lack of variety.
B．Full of varieties.
C．Fresh but not delicious.
D．Attractive and nutritious.
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