A．Polio can be re-infected with virus originating from other countries.
B．Polio can be eventually wiped out however persistent it may seem.
C．Polio can be eradicated from areas where no central govermnent functions.
D．Polio can be eliminated from developing countries where it persists.
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A．Five.
B．Six.
C．Seven.
D．Forty-five.
A．Rick Vega was found to have a bad driving record.
B．Navaira had been drinking before the accident.
C．Joe Casias had been speeding before the accident.
D．Navaira was found to have no bus-driving license.
A．evacuating people to higher ground．
B．sweeping different kinds of animals away-
C．carrying cars and trucks miles away．
D．immersing buildings in the low-lying areas in water.