题目选项分析

In 1994 the white house named Dr RuthR. Faden chairperson of the federal advisory committee of experts it assigned to do a report on the history and ethics of the government's radiation experiments on humans in the 1950's and1960's.

In 1994 the white house named Dr RuthR. Faden chairperson of the federal advisory committee of experts to be assigned doing a report on the history and ethics of the government's radiation experiments on humans in the 1950's and1960's.