Culture

• Why Is Bubble Tea So popular in Britain? 为什么奶茶在英国如此受欢迎？

Animals

• Why Do Dogs Always Bark at the Air? 为什么狗总对着空气汪汪叫？

Lifestyles

• Some Ways to Boost Your Mood on Bad Weather Days 在天气糟糕时改善情绪的一些方法

• How Much Do You Know About Building a Habit? 习惯养成知多少？

Sports

• How to Use Treadmills Safely 如何安全使用跑步机

Learning Box

• Why Does Autumn Have Two Names in America? 在美国，秋天为什么有两个名字？

Skill Enhancement

• Units 1—2 Review

• Units 3—4 Review

• Units 5—6 Review

• Units 1—6 Review

• Units 1—2 Review

• Units 3—4 Review

• Units 5—6 Review

• Units 1—6 Review

• Final Test

• Keys