单项选择题

A．Personal.
B．Objective.
C．Spoken.
D．Written.
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单项选择题
A．Nitrate is a kind of substance used to preserve color in meats.B．Drugs are given to animals not always for medical reasons.C．Most human illnesses are probably caused by the food we eat.D．Forty percent of colon cancer is caused by our diet.
A．Nitrate is a kind of substance used to preserve color in meats.
B．Drugs are given to animals not always for medical reasons.
C．Most human illnesses are probably caused by the food we eat.
D．Forty percent of colon cancer is caused by our diet.
单项选择题
A．Research what television is best for him.B．Ask for a cheaper price on the television.C．Try a different store.D．Be satisfied with what he has.
A．Research what television is best for him.
B．Ask for a cheaper price on the television.
C．Try a different store.
D．Be satisfied with what he has.
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