Bill, for instance, often gets painful flashbacks, in which unwanted memories intrude into his consciousness, but overall he has chosen to see it as the best way of avoiding repeating the same mistakes.

出自-2017年6月阅读原文

Bill, for instance, often gets painful "flashbacks", in which unwanted memories intrude into his consciousness, but overall he has chosen to see it as the best way of avoiding repeating the same mistakes.

2017年6月四级真题（第一套）阅读 Section B

When will the unwanted data eventually disappear from Facebook according to the company?

出自-2010年12月听力原文