A recent survey shows that 44 percent of Americans want to use self﹣driving cars，_______ 34 percent believe that they will make the roads more dangerous． （ ）
A．althoughB．becauseC．if
A recent survey shows that 44 percent of Americans want to use self﹣driving cars，_______ 34 percent believe that they will make the roads more dangerous． （ ）
A．althoughB．becauseC．if
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