笑话(英文) 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

笑话(英文)

摘要：	Two birds Teacher: Here are two birds. One is a swallow(燕子) , and the other is a sparrow(麻雀) .Now who can tell which is which?
本文献已被 CNKI 等数据库收录！