454 Which of the following is a dangerous behavior for riding a motorcycle
(A)talking on the cell phone while riding a motorcycle
(B)carrying passengers in the front and the back
(C)all of the above.
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統計: A(0), B(0), C(1), D(0), E(0) #2216091
統計: A(0), B(0), C(1), D(0), E(0) #2216091