MCQOPTIONS
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				| 1. | 
                                    The motion of air mass in a tornado is a | 
                            
| A. | ree vortex motion | 
| B. | orced vortex motion | 
| C. | ree vortex at center and forced vortex outside | 
| D. | orced vortex at center and free vortex outside | 
| Answer» E. | |