文章列表

• 1.与美国小学生一起学英文第4册 第2期:昼与夜
• Day and Night 昼与夜 When is the longest day of the year in your country? 你们国家一年之中哪天最长呢？ You may think it is a summer day. 你也许会想夏...
• 2.与美国小学生一起学英文第4册 第1期:肺
• Lung 肺 How many lungs do we have? 我们有多少块肺呢？ We have two lungs in our body. 我们有两块肺。 Lungs are protected by ribs. 肺由肋骨保护。 They a...