单项选择题

What does the author concern most in the passage

A．Education on genetically-modified food to the public.
B．Biotechnology of genetically-modified food.
C．Safety of genetically-modified food.
D．Research of genetically-modified food.

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单项选择题

Most Americans______.

A．buy genetically-engineered foods
B．know the foods they buy are genetically engineered
C．want genetically-modified foods to be clearly labeled
D．eat genetically-modified foods

单项选择题

The public cannot make informed choices of what food they buy because______.

A．there is no clear labeling on the food
B．they are not well informed of the potential danger of genetically-modified food
C．there is no adequate education on proper diets
D．they are not concerned about genetically-modified ingredients in their food