【题目】________the difference between the two research findings will be one of the worst mistakes you make.
A.Ignore
B.Ignoring
C.Ignored
D.Having ignored

【答案】B
【解析】句意：忽视这两项研究结果的差异将会是你所犯的最严重的错误之一。句子缺少主语，ignore的逻辑主语是you，两者是主谓关系，因此用动名词做主语，故选B。