Directions for Questions 1-8: Basing your decision only on the meaning of the prefix, choose the word that best matches the definition. Then, select the correct prefix and its meaning. "Moving backward" is [选择] regression digression introgression . The prefix is [选择] {re} {intro} {di} {ad} {ex} , which means [选择] towards in front out away backwards .多重下拉选择题