Unit 4 At the farm 复习复习Listen and guess:What are they?They are.horsescowssheephenstomatoespotatoesgreen beanscarrotshenshorsescowssheepWhat is it?It is an apple.What are these?They are apples.appleapplesWhat is it?It is a tomato.What are these?They are tomatoes.What are these?They are carrots.They are so big!Is it a dog?Yes,it is.Are these cats?Yes,they are.What are those?What are these?They are horses.What are those?（）1.Are they goats?A.它们是山羊吗？它们是山羊吗？B.它们是绵羊吗？它们是绵羊吗？C.它们是小羊羔吗？它们是小羊羔吗？（）2.Look a
