单选题
As mainstream chip production technology shifts from one generation to the next every three to five years, plants with new technology can make more powerful chips at lower costs, ______plants with outdated equipment, which often cost billions of dollars to build, will be marginalized by the maker.
【正确答案】
C
【答案解析】解析：根据题意可知，plants with new tethnology与plants with outdated equipment；make more powerfull chips at lower costs与will be marginalized by the maker形成对比关系，C项while的意思是“而”，它是表示前后对比的连词，故选C。