step by step 第二册 lesson 14Lesson54 Part Ⅰ Lesson 54 Part Ⅰ Warming-up Exercises Numbers and Time: Announcements 1.The train at...时间：2006-12-22
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step by step 第二册 lesson 15UNIT 28 TRANSPORTATION Lesson 55 Part Ⅰ UNIT 28 TRANSPORTATION Lesson 55 Part Ⅰ Warming-up Exercises...时间：2006-12-22
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step by step 第二册 lesson 16Lesson56 Part Ⅰ Lesson 56 Part Ⅰ Warming-up Exercises Phonetics: Homonyms 1.a.it's b. its 2.a.throug...时间：2006-12-22
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step by step 第二册 lesson 17UNIT 29 TRAFFIC ACCIDENTS Lesson 57 Part Ⅰ UNIT 29 TRAFFIC ACCIDENTS Lesson 57 Part Ⅰ Warming-up Exe...时间：2006-12-22
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step by step 第二册 lesson 18Lesson58 Part Ⅰ Lesson 58 Part Ⅰ Warming-up Exercises Phonetics: Homonyms 1. a. principle b. princip...时间：2006-12-22
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step by step 第二册 lesson 19UNIT 30 STORY Lesson 59 The Cop And The Anthem ( Ⅰ ) UNIT 30 STORY Lesson 59 The Cop And The Anthem ...时间：2006-12-22
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step by step 第二册 lesson 20Lesson 60 The Cop And The Anthem ( Ⅱ ) Lesson 60 The Cop And The Anthem ( Ⅱ ) Exercises: Ⅰ . 1 How d...时间：2006-12-22
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step by step 第二册 lesson 21UNIT 31 HOLIDAYS AND FESTIVALS ( Ⅰ ) Lesson 61 Part Ⅰ UNIT 31 HOLIDAYS AND FESTIVALS ( Ⅰ ) Lesson 61...时间：2006-12-22
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step by step 第二册 lesson 22Lesson 62 Part Ⅰ Lesson 62 Part Ⅰ Warming-up Exercises Sentence Structure 1. a. So they must listen....时间：2006-12-22
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step by step 第二册 lesson 23UNIT 32 HOLIDAYS AND FESTIVALS ( Ⅱ ) Lesson 63 Part Ⅰ UNIT 32 HOLIDAYS AND FESTIVALS ( Ⅱ ) Lesson 63...时间：2006-12-22
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step by step 第二册 lesson 24Lesson 64 Part Ⅰ Lesson 64 Part Ⅰ Warming-up Exercises Sentence Structure 1. a. She talked until it ...时间：2006-12-22
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step by step 第二册 lesson 25UNIT 33 TOURIST ATTRACTION Lesson 65 Part Ⅰ UNIT 33 TOURIST ATTRACTION Lesson 65 Part Ⅰ Warming-up E...时间：2006-12-22
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step by step 第二册 lesson 26Lesson 66 Part I Lesson 66 Part I Warming-up Exercises Numbers: The Ten Largest Countries in Land Si...时间：2006-12-22
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step by step 第二册 lesson 27UNIT 34 NATURE (I) ANIMAL WORLD Lesson 67 Part I UNIT 34 NATURE (I) ANIMAL WORLD Lesson 67 Part I Wa...时间：2006-12-22
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step by step 第二册 lesson 28Lesson 68 Part I Lesson 68 Part I Warming-up Exercises Sentence Structure 1. a. Monkeys are not as i...时间：2006-12-22
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step by step 第二册 lesson 29UNIT 35 NATURE( Ⅱ ) ANIMALWORLD Lesson 69 Part Ⅰ UNIT 35 NATURE( Ⅱ ) ANIMAL WORLD Lesson 69 Part Ⅰ W...时间：2006-12-22
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step by step 第二册 lesson 30Lesson 70 Part Ⅰ Lesson 70 Part Ⅰ Warming-up Exercises Sentence Structure 1.a.Jeff is happy that he ...时间：2006-12-22
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