单项选择题
A.goal B.promotion C.license D.research
A. It was taken away from Greece. B. It was found by some Italian fishermen. C. It was illegally exported to the U.S.A. D. It was buried somewhere in Italy.
A. is useful in clarifying economic utility B. was developed from human activities C. was initiated by some neuroscientists D. is hard for the public to understand