1. In the preparation of fibrous material for production uses, stiff woody fibers from plants ............. fibers from animal sources.
2. Partnership is an association of two or more individuals who ............. together to develop a business.
3. Chosen as the nation's capital at the end of the American Civil War, ............. a city of over a million people.
4. Within an area of only 100 miles, Death Valley sinks to 282 feet below sea level while Mount Whitney ............. to a height of 14,494 feet.
5. The cosmopolitan flavor of San Francisco is enhanced by ............. shops and restaurants.
6. ............. that increasing numbers of compact-disc players will be bought by consumers in the years to come.
7. Birds all over the world ............. in distances up to thousands of miles.
8. Cellulose, which ............. for making paper, can be found in all plants.
9. ............. , human beings have relatively constant body temperature.
10. So far there is no vaccine ............. in sight for the common cold.
11. The Louisiana Territory, an area ............. the size of France, was bought by the United States from France for $15,000,000 in 1803.
12. Despite claims that filters and low-tar tobacco make smoking somewhat safer, in fact they only marginally reduce, ............. eliminate the hazards.
13. ............. many of the designs for the new capital were considered lost forever, Benjamin Banneker helped reproduce the original plans.
14. Few natural elements exist in ............. that they are rarely seen in their natural environments.
15. Generally speaking, every person ............. the potential to be a teacher, to some extent.
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