关注公众号免费下载高清PDF电子课本
Unit 1 NatureReading A
Digging in
Listening and Viewing
Moving Forward
Reading B
Further Exploration
Self-assessment
Unit 2 Animals
Reading A
Digging in
Listening and Viewing
Moving Forward
Reading B
Further Exploration
Self-assessment
Unit 3 Food
Reading A
Digging in
Listening and Viewing
Moving Forward
Reading B
Further Exploration
Self-assessment
Unit 4 Sports
Reading A
Digging in
Listening and Viewing
Moving Forward
Reading B
Further Exploration
Self-assessment