根据语篇内容， 选择最佳选项。①Some people think that we aren't really able to form memories before our fourth or fifth birthdays. But scientists say this is untrue. They think we form memories at a very young age. However, the memories seem to change as we get older.
②Researchers in Newfoundland, Canada, interviewed 140 children aged between 4 and 13. First, they asked the children to describe their earliest memory and tell their ages. Next, they asked their parents to make sure the event actually happened. All the answers were recorded. The researchers waited for two years before they went back to the children and asked them again," What's your earliest memory?"
③Nearly all the children were aged between 4 and 7 in the first interview. They said something very different in the second interview. However, many of the children who were between 10 and 13 at the first interview described exactly the same memory in the second interview. This seems to suggest that our memories change in the early years, but at around the age of ten, they make the things that we remember fixed.
④The researchers are now looking into why children remember certain events and not others. We sometimes think that most first or early memories are about very stressful things that happened to us as children, because bad things stand out in our minds. But in this study, stressful things were only a small part of what the children said they remembered. More often, children's early memories were happy ones. The researchers are trying to work out the reasons. We can surely look forward to more fascinating discoveries about memories in the near future.
