GRE Text Completion: JiJing 1373-GRE填空机经1373题 - KI_53447411X09K4A

A particular bacterium that has never encountered a particular virus will usually succumb to it, a ____________ that may, surprisingly, be beneficial to the colony in which the bacterium lives. A. susceptibility B. theory C. characteristic D. juxtaposition E. collision F. hypothesis