Lesson 23 The Internet — Good or Bad_第一课时_特等奖

Unit 1 Spring Is Coming!_第一课时_特等奖

Unit 2 Plant a Plant!_第一课时_特等奖

Unit 3 Animals Are Our Friends_第一课时_特等奖

Structures and Expressions_第一课时_特等奖

Lesson 8 Why Are Plants Important_第一课时_特等奖

Lesson 10 Make Your Garden Grow!_第一课时_特等奖

Lesson 13 Danny’s Big Scare_第一课时_特等奖

Lesson 20 A Computer Helps!_第一课时_特等奖

Lesson 23 The Internet — Good or Bad_第一课时_特等奖

Lesson 34 Modern Olympics_第一课时_特等奖

Lesson 44 Environment Clubs_第一课时_特等奖

Lesson 17 Save the Tigers_第一课时_特等奖

Lesson 20 A Computer Helps!_第一课时_特等奖

Lesson 9 Gardening with Mary_第一课时_特等奖

Lesson 11 Amazing Plants_第一课时_特等奖

Lesson 18 Friendship Between Animals_第一课时_特等奖

Lesson 19 How Do You Use the Internet_第一课时_特等奖

Lesson 29 How to Push a Product_第一课时_特等奖

Lesson 33 2 800 Years of Sports_第一课时_特等奖