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Unit 1课时作业：Lesson 1 How's the Weather？.doc
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Unit 1课时作业：Lesson 2 It's Getting Warmer!.doc
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Unit 1课时作业：Lesson 3 The Sun Is Rising.doc
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Unit 1课时作业：Lesson 4 The Spring City.doc
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Unit 1课时作业：Lesson 5 Babysitting on a Spring Day.doc
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Unit 1课时作业：Lesson 6 Stories about Spring.doc
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Unit 2课时作业：Lesson 10 Make Your Garden Grow!.doc
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Unit 2课时作业：Lesson 11 Amazing Plants.doc
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Unit 2课时作业：Lesson 12 Danny's Plant.doc
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Unit 2课时作业：Lesson 7 Planting Trees.doc
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Unit 2课时作业：Lesson 8 Why Are Plants Important.doc
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Unit 2课时作业：Lesson 9 Gardening with Mary.doc
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Unit 3课时作业：Lesson 13 Danny's Big Scare.doc
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Unit 3课时作业：Lesson 14 Amazing Animals.doc
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Unit 3课时作业：Lesson 15 The Zoo Is Open.doc
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Unit 3课时作业：Lesson 16 The Bear Escaped!.doc
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Unit 3课时作业：Lesson 17 Save the Tigers.doc
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Unit 3课时作业：Lesson 18 Friendship Between Animals.doc
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Unit 4课时作业：Lesson 19 How Do You Use the Internet？.doc
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Unit 4课时作业：Lesson 20 A Computer Helps!.doc
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Unit 4课时作业：Lesson 21 Books or Computers.doc
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Unit 4课时作业：Lesson 22 Travel on the Internet.doc
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Unit 4课时作业：Lesson 23 The Internet — Good or Bad.doc
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Unit 4课时作业：Lesson 24 An E-mail to Grandpa.doc
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Unit 5课时作业：Lesson 25 Raising Money.doc
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Unit 5课时作业：Lesson 26 Cookies, Please!.doc
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Unit 5课时作业：Lesson 27 Business English.doc
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Unit 5课时作业：Lesson 28 Ms. Liu's Great Idea.doc
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Unit 5课时作业：Lesson 29 How to Push a Product.doc
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Unit 5课时作业：Lesson 30 A Cookie Sale.doc
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Unit 6课时作业：Lesson 31 Don't Fall, Danny！.doc
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Unit 6课时作业：Lesson 32 My Favourite Record.doc
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Unit 6课时作业：Lesson 33 2 800 Years of Sports.doc
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Unit 6课时作业：Lesson 34 Modern Olympics.doc
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Unit 6课时作业：Lesson 35 The Dream Team.doc
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Unit 6课时作业：Lesson 36 Classroom Olympics.doc
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Unit 7课时作业：Lesson 37 Let's Learn Geography！.doc
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Unit 7课时作业：Lesson 38 The World Is a Big Place.doc
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Unit 7课时作业：Lesson 39 Ring Up or Call.doc
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Unit 7课时作业：Lesson 40 Body Language.doc
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Unit 7课时作业：Lesson 41 A Class of the World.doc
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Unit 7课时作业：Lesson 42 North America.doc
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Unit 8课时作业：Lesson 43 Let's Clean Up.doc
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Unit 8课时作业：Lesson 44 Environment Clubs.doc
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Unit 8课时作业：Lesson 45 Let's Sort Garbage!.doc
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Unit 8课时作业：Lesson 46 Protect Our Environment.doc
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Unit 8课时作业：Lesson 47 Connected to Nature.doc
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Unit 8课时作业：Lesson 48 Garbage Is Interesting!.doc
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