摘要

<正>1 Two boys are talking with each other.A:You see,in the old times there was no electricity,no radios or no televisions.How could our ancestors survive?B:So they all died.两个孩子正在交谈。A:你想,古代没有电,没有收音机,也没有电视。我们的祖先怎么能活着呢?B:所以他们都死了。