根据短文内容判断下列说法的正误。

    Before，there was no zoo in my city．Now there is a big zoo．There are lots of animals．Last Sunday，I went to the zoo with my parents．In the morning，I got up at 7 o'clock．Then，I had breakfast．We went to the zoo by car．I saw many animals in the zoo，such as monkeys，tigers，lions and so on．I was very happy．

在△ABC中，∠A，∠B，∠C的对边分别为a，b，c，且（a+b）（a﹣b）=c²，则（　　）

下列各组词语中无错别字的一项是（    ）