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Birds are our friends. If there are no birds，we would never hear beautiful songs from forests. We would never see these lovely angels with beautiful wings. Oh，could you imagine what the world would be like without birds？
If there are no birds，forests and fields would be destroyed by pests（害蟲）. We would have no food. How can we survive？ When birds disappear someday，people would disappear，too. Therefore（因此），we should protect birds right now.
（指导老师：刘加霞）
If there are no birds，forests and fields would be destroyed by pests（害蟲）. We would have no food. How can we survive？ When birds disappear someday，people would disappear，too. Therefore（因此），we should protect birds right now.
（指导老师：刘加霞）