Practice 1 Solid-Fuel Rocket and Liquid-Fuel Rocket
Practice 2 Statistics:Its Development and Use
Practice 3 Anglo Patrons'' Influence on Hispanic and American Arts
Practice 4 How Do Americans Become Wealthy?
Practice 5 Oil Industry in Today''s Norway
Practice 6 Cacti
Practice 7 Erosion:How to Do wit It
Practice 8 Animals Need Protection
Practice 9 Herodotus-A Greatest Tourist
Practice 10 Railroad Building in the 19th US
Practice 11 Study of Hurricane
Practice 12 Methods of Children''s Education
Practice 13 UFO
Practice 14 Tunnel Building in New York
Practice 15 G.W.Carver:His Work and Career
Practice 16 Southeasterners''Views on Universe
Practice 17 A Portrait of Grandma Moses
Practice 18 Two Men in Henry''s Lunch-Room
Practice 19 World''s Wild Areas
Practice 20 Construction, Savings and The Stock Exchange
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