GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 2UB2A3R52CZQ6445A

Scientific discovery calls for a difficult balance: intrepid advocacy of new ideas must often be ____________ by the results of self-imposed trials. A. tempered B. moderated C. unhampered D. preempted E. superseded F. prefaced