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In 1994 the white house named Dr RuthR. Faden chairperson of the federal advisory committee of experts they assigned to do a report on the history and ethics of the government’s radiation experiments on humans in the 1950’s and 1960’s .
A. they assigned to do
B. to be assigned doing
C. that was being assigned doing
D. assigned for doing
E. it assigned to do
E里面是(which)it assigned to do 这样的?还是别的哪种修饰?
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