His latest research is at the of genetic science.
A. maiden voyage
B. cutting edge
C. focus group
D. daily basis
网友回答
A. maiden voyage
B. cutting edge
C. focus group
D. daily basis
解析： 本题考查名词短语辨析。句意：他的最新研究处于基因科学的前沿位置。at the cutting edge of处在……最前沿的位置。