题目:
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 and1960's.
选项:
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
答案:
E