1.A recent survey of all auto accident victims in Dole Country found that , of the severely injured drivers and frontseat passengers, 80 percent were not wearing seat belts at the time of their accidents. This indicates that , by wearing seat belts, drivers and frontseat belts can greatly reduce their risk of being severely injured if they are in an auto accident. The conclusion above is not properly drawn unless which of th following is true? A Of all the drivers and frontseat passengers in the survey, more than 20 percent were wearing seat belts at the time of their accidents. 为什么选A 为什么选A
1.A recent survey of all auto accident victims in Dole Country found that , of the
severely injured drivers
and frontseat passengers, 80 percent were not wearing seat belts at the time
of their accidents. This indicates that , by wearing seat belts, drivers and
frontseat belts can greatly reduce their risk of being severely injured if they
are in an auto accident.
The conclusion above is not properly drawn unless which of th following is true?
A Of all the drivers and frontseat passengers in the survey, more than 20 percent
were wearing seat belts at the time of their accidents.
为什么选A
为什么选A
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