【正文】 cent.5. The dog seemed as happy about it as RoycroftUnit 2 Ⅰlisten to the passage.1. T2. T3. F4. T5. FⅡListen again.① survivor② adapt③ recovering④ available⑤ produceⅢ. Listen and repeat1. Crocodiles are among the oldest species of animals on the face of the earth.2. Crocodiles are unusually good at getting over diseases and injuries of many kinds.3. They are also able to go for a very long period of time without eating.4. The crocodile’s teeth are welldesigned to grip and hold things.5. Its skin color also helps it disappear in its environment.Unit 3Ⅰlisten to the passage.Saying 1: see, remember, understandSaying 2: do to othersSaying 3: make mistakesSaying 4: to fall shortⅡ Listen and repeat1. I agree pletely with the statement.2. It takes hard work to learn new vocabulary words.3. Treat others as you would like to be treated.4. It’s better to work slowly and pay close attention to details.5. It’s important to find a balance between two extremes. Ⅲ. Listen again.Saying 1: 8:20 am Hearing, reading, UsingSaying 2: 7:00 pmtalking badly, ke