We______theseminarsponsoredbyyouinSeptemberlastyear.

Without transportation, there could be no trade. Without trade, there could be no towns and cities. Towns and cities are traditionally the ___16___ of civilization. Therefore, transportation helps make civilization ___17___ . 

Throughout most of the prehistoric period, people lived by hunting, fishing, and ___18___ wild plants. They had no beasts of burden, wheeled vehicles, or roads. People traveled ___19___ and carried their infants and belongings strapped to their backs or heads. Loads too heavy for one person to carry were strapped to a pole and carried by two people. 

The wheel was invented about 3500 B.C. and sailboat about 3200 B.C. Wheeled vehicles and sailing vessels ___28___transportation. But the speed of transportation improved only ___29___ over the centuries. Inventors produced the first engine- ___30___ vehicles during the late 1700’ s and the early 1800’ s. This development marked the beginning of a revolution in transportation that has continued to the present. 

16. A. highlights B. pinpoints C. headquarters D. centers

17. A. possible B. acceptable C. practical D. typical

18. A. growing B. gathering C. watering D. moving

19. A. in turn B. at ease C. on foot D. for fun

20. A. All the while B. For a while C. In time D. On time

21. A. temporary B. permanent C. regular D. steady

22 A. knowledge B. judgment C. standards D. means

23. A. recognize B. develop C. meet D. reduce

24. A. bear B. move C. share D. lift

25. A. materials B. styles C. items D. types

26. A. where B. when C. how D. as

27. A. poles B. sails C. currents D. winds

28. A. demonstrated B. revolutionized C. witnessed D. initiated

29. A. considerably B. continuously C. swiftly D. slightly

30. A. powered B. controlled C. oriented D. related

Youmustberesponsibleforallthelosses____fromyourdelayinopeningthecoveringL/C.

AccordingtoMaslow,self-actualizationneedexcludes_______

Webelievesuchanagreementwillprove____.