1.a group of dolphins swim together.
2. Dolphins don’t like to be away from their school in an aquarium. They are sad and lonely.
3.海豚是哺乳动物,而不是鱼类,但它们却像“鱼群”一样在一起游泳.在“鱼群”中,海豚们相互交流,互通信息,它们会在自己高兴或是悲伤或是恐惧时表达感情.
4.They say " welcome" when a dolphin comes back the school .
5.There are many stories about dolphins. They help people. Sometimes they save somebody’s life.And many people think dolphins can bring good luck.
没想到几年不做题,现在的英语题不简单啊,这是几年级的题啊?