| Lesson OnePart Ⅰ First People in the AmericasPart Ⅱ American IndiansPart Ⅲ Improving Listening ComprehensionLesson TwoPart Ⅰ Martin Luther King JrPart Ⅱ Your John HancockPart Ⅲ Improving Listening ComprehensionLesson ThreePart Ⅰ All Fools' DayPart Ⅱ The Origin of the Word "Hello"Part Ⅲ Improving Listening ComprehensionLesson FourPart Ⅰ Labour DayPart Ⅱ VaselinePart Ⅲ Improving Listening ComprehensionLesson FivePart Ⅰ Saturday Night in the U,S. (Ⅰ)Part Ⅱ Saturday Night in the U.S. (Ⅱ)Part Ⅲ Improving Listening ComprehensionLesson SixPart Ⅰ EI Nino and La NinaPart Ⅱ Lame DuckPart Ⅲ Improving Listening ComprehensionLesson SevenPart Ⅰ Atmospheric Conditions in AntarcticaPart Ⅱ t Ax to GrindPart Ⅲ Improving Listening ComprehensionLesson EightPart Ⅰ Chinese Giant Pandas (Ⅰ)Part Ⅱ Chinese Giant Pandas (Ⅱ)Part Ⅲ Imroving Listening ComprehensionLesson NinePart Ⅰ Indonesian Komodo DragonsPart Ⅱ The CatPart Ⅲ Improving Listening ComprehensionLesson TenPart Ⅰ The Universal Employment AgencyPart Ⅱ MuckrakerPart Ⅲ Improving Listening ComprehensionLesson ElevenPart Ⅰ Permanent Artificial HeartsPart Ⅱ Heart and Its PhrasesPart Ⅲ Improving Listening ComprehensionLesson TwelvePart Ⅰ Respiratory InfectionsPart Ⅱ From the EyePart Ⅲ Improving Listening ComprehensionLesson ThirteenPart Ⅰ AIDS and Tuberculosis in Asia (Ⅰ)Part Ⅱ AIDS and Tuberculosis in Asia (Ⅱ)Part Ⅲ Improving Listening ComprehensionLesson FourteenPart Ⅰ Children and CompetitionPart Ⅱ BunkPart Ⅲ Improving Listening ComprehensionLesson FifteenPart Ⅰ Child-Care in the United StatesPart Ⅱ White-Haired BoyPart Ⅲ Improving Listening ComprehensionLesson SixteenPart Ⅰ The Westinghouse Science Talent SearchPart Ⅱ American Children's Favourite——SneakersPart Ⅲ Improving Listening ComprehensionLesson SeventeenPart Ⅰ Laser LightPart Ⅱ Hand and Its PhrasesPart Ⅲ Improving Listening ComprehensionLesson EighteenPart Ⅰ ShoplifterPart Ⅱ Dog and Its PhrasesPart Ⅲ Improving Listening ComprehensionTapescriptAnswer Key |
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