Three reasons are given. Firstly, in the first years of our lives our brains are growing so fast that new brain cells interfere with existing mental circuits. Secondly, the hippocampus is not fully formed until 18 months old. Thirdly, babies don't develop a sense of identity until around two years old.

2. What does it mean to be a 'sponge for new information'?

Being a 'sponge' means you acquire a lot of new information very quickly, the same way a sponge fills with water.

3. True or false? Babies are accomplished polyglots.

False. Although babies learn languages very fast, an 'accomplished polyglot' is someone who has learned several languages to a very high level.

4. Which word means 'very green and covered in plants'?

Leafy.

5. Why might our earliest memories actually be false?

According to Elizabeth Loftus, people pick up suggestions and visualise them - this makes these mental images seem like memories.

2. 请你在不参考课文的情况下完成下列练习。选择一个意思合适的单词填入句子的空格处 。

1. My memory of the party is a bit hazy.

2. Infants don't form lasting memories.

3. Brian is very forgetful. He can't remember what he ate for lunch!

4. Wang Li is like a sponge. She learned how to use HTML in a week.

5. People say that if you can visualise success, it makes you more likely to be successful.

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