273. If a driver accumulates 12 or more demerit points within one year, theirdriver's license will be suspended for (A) 6 months (B) 2 months (C) 1 year.

279.When hearing the sirens of a fire truck, police vehicle, ambulance,engineering rescue vehicle, or hazardous chemical disaster response vehicle,regardless of direction, one should (A) not yield, (B) not yield as long as notcrossing the line, or (C) immediately yield and must not follow closely behind.