根据句意和所给中文写出句中所缺的单词。1. First, please ______

题目内容：

根据句意和所给中文写出句中所缺的单词。

1. First, please _________ (介绍) yourself to us all, OK?

2. Something should be done to protect the ________ (环境) in our hometown.

3. After _________ (检查) the computer, he told me there were no tickets.

4. Smoking will _________ (当然) do harm to your health.

5. There will be an exciting football match between China and Japan on _________ (频道) 5 tonight.

最佳答案：

1. introduce 2. environment 3. checking 4. certainly 5. Channel

答案解析：

该题暂无解析

考点核心：

根据最新人教版版和牛津版的初中英语教材的词汇量，一个水平较高的初中毕业生的词汇量应在2400左右。初中的单词和词组词汇量要求数量会不断增长。