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 and 1960'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:
D