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Cantents？ 1

Lesson 15 Text：Imperialism Will Not Last Long 1

Grammar：The Adverbial Clause 4

Lesson 16 Text：The Naked Soul of the U.S Invaders 7

Grammar：The Attributive Clause 11

Lesson 17 Text：Dust 14

Grammar：The Obiect Clause 18

Lesson 18 Text：New Awakening of the American Negroes 21

Lesson 19 Text：Expansion and Contraction 27

Lesson 20 Text：A Letter from South Vietnam 32

Grammar：The Infinitive 36

Lesson 21 Text：Machine Building Goes Ahead 40

Grammar：The Gerund 44

Lesson 22 Text：At a Tailor’s Shop 47

Grammar：The Participle 53

Lesson 23 Text：The People’s Railways 56

Lesson 24 Text：Jackson’s Arm 63

Lesson 25 Text：The Hsinan-River Hydro-electric Power Station 70

Lesson 26 ？ 77

Lesson 27 ？ 82

Supplemental 90

Lesson 1 Lathe 90

Lesson 2 “Wheel”Brand Bench Type Hand　Drill 93

Appendices 97

Ⅰ．Word Formation 97

Ⅱ．Idioms and Phrases 101

Ⅲ．Vocabulary 102