Unit One InternationalVisits Lesson 1 Traveling by Air Lesson 2 Receiving a Visitor Unit Two post and Communications Lesson 1 At the Post Office Lesson 2 News from a School Broadcasting Station Lesson 3 Bell and His Telephone Unit Three Science and Technology Lesson 1 Water Lesson 2 A Geography Lesson Lesson 3 Owning a Car Unit Four Student Life Lesson 1 School Uniforms Lesson 2 Spending Habits 九年级第二学期 Unit One Values Lesson 1 What Are Good Friends? Lesson 2 Volunteering Is Great! Lesson 3 George Washington and the Cherry Tree Unit Two Changes in Life Lesson 1 My Task Is to Report the Changes in Education Lesson 2 Life in the Future 九年级第一学期练习答案 九年级第二学期练习答案
