Lesson One Part Ⅰ First People in the Americas Part Ⅱ American Indians Part Ⅲ Improving Listening Comprehension Lesson Two Part Ⅰ Martin Luther King Jr Part Ⅱ Your John Hancock Part Ⅲ Improving Listening Comprehension Lesson Three Part Ⅰ All Fools Day Part Ⅱ The Origin of the Word "Hello" Part Ⅲ Improving Listening Comprehension Lesson Four Part Ⅰ Labour Day Part Ⅱ Vaseline Part Ⅲ Improving Listening Comprehension Lesson Five Part Ⅰ Saturday Night in the U，S. （Ⅰ） Part Ⅱ Saturday Night in the U.S. （Ⅱ） Part Ⅲ Improving Listening Comprehension Lesson Six Part Ⅰ EI Nino and La Nina Part Ⅱ Lame Duck Part Ⅲ Improving Listening Comprehension Lesson Seven Part Ⅰ Atmospheric Conditions in Antarctica Part Ⅱ t Ax to Grind Part Ⅲ Improving Listening Comprehension Lesson Eight Part Ⅰ Chinese Giant Pandas （Ⅰ） Part Ⅱ Chinese Giant Pandas （Ⅱ） Part Ⅲ Imroving Listening Comprehension Lesson Nine Part Ⅰ Indonesian Komodo Dragons Part Ⅱ The Cat Part Ⅲ Improving Listening Comprehension Lesson Ten Part Ⅰ The Universal Employment Agency Part Ⅱ Muckraker Part Ⅲ Improving Listening Comprehension Lesson Eleven Part Ⅰ Permanent Artificial Hearts Part Ⅱ Heart and Its Phrases Part Ⅲ Improving Listening Comprehension Lesson Twelve Part Ⅰ Respiratory Infections Part Ⅱ From the Eye Part Ⅲ Improving Listening Comprehension Lesson Thirteen Part Ⅰ AIDS and Tuberculosis in Asia （Ⅰ） Part Ⅱ AIDS and Tuberculosis in Asia （Ⅱ） Part Ⅲ Improving Listening Comprehension Lesson Fourteen Part Ⅰ Children and Competition Part Ⅱ Bunk Part Ⅲ Improving Listening Comprehension Lesson Fifteen Part Ⅰ Child-Care in the United States Part Ⅱ White-Haired Boy Part Ⅲ Improving Listening Comprehension Lesson Sixteen Part Ⅰ The Westinghouse Science Talent Search Part Ⅱ American Childrens Favourite——Sneakers Part Ⅲ Improving Listening Comprehension Lesson Seventeen Part Ⅰ Laser Light Part Ⅱ Hand and Its Phrases Part Ⅲ Improving Listening Comprehension Lesson Eighteen Part Ⅰ Shoplifter Part Ⅱ Dog and Its Phrases Part Ⅲ Improving Listening Comprehension Tapescript Answer Key
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