7B Unit 3 Our Animal Friends重点单词、短语Blind adj.失明的,瞎的radio n.收音机Programme n.计划,项目Helpful adj.有用的Helpless无用的Rescue v.援救Mean v. 表示的意思Allow v.允许Finally adv. 最后,终于Airport n.机场Pet n.宠物Apologize v. 道歉Lead 领导Bark 吠叫,咳嗽Wake 叫醒,唤醒Towel 手巾,毛巾Bottom 底部,末端Appear 出现Climb 攀登arrive at 到达by oneself 独自的,单独的lead sb. to 带着某人到fall asleep入睡wake up醒来,唤醒get down 下来,沮丧fire engine 消防车重点句型1.I think.are very helpful animals. They help us.