(1) Mr. Brown (the motorist) At about 9:20 p.m. on October 14th, I was driving along Market Road in the direction of Midwick. I wanted to go to Sturham to collect my wife, who had been visiting some friends. I prepared to turn into Sturham Road, which was on my right. In the distance, I saw the lights of a car moving towards me but it was a long way from me. I put out my hand to show that I was going to turn right. Then I started to turn slowly towards Sturham Road. Suddenly there was a loud noise on the passenger's (near) side of the car. I stopped the car and got out. A motorcycle had hit my car. The motorcyclist had been thrown over the car. He was injured, so I ran to a shop to phone for help. (2) Mr. Smith (the injured motorcyclist) On the evening of October 14th, I was going home along Market Road towards Newtown. I was riding my motorcycle. I was going slowly because some of the streetlights were out and the road was wet and slippery. Just before Sturham Road, a car suddenly drove right across my path. The driver did not flash his lights to give a warning. I could not turn in time, so I hit the side of the car. When I woke up, I was lying in a hospital in Market Road. (3) Mr. Lee (another motorcyclist) At about 9:10 p.m. on October 14th, I left my home in Midwick. Ten minutes later I was riding my motorcycle along Market Road. I was going to Newtown. There was a motorcycle about 40 metres in front of me. It was not going very quickly. The man on it was riding near the curb (路边) but I was near the center of the road. The motorcyclist in front of me tried to turn to his right but there was no time. He hit the car and was injured. There was no car going along in front of us or put by the road. 48．Which of these statements about the accident is probably correct? A．Mr. Brown wrongly supposed that the lights of the two motorcycles were those of a car. B．The lights of the car moving towards Mr. Brown made him unable to see. C．Mr. Brown knocked down a motorcyclist on purpose. D．The accident was caused by the carelessness of the first motorcyclist. 49．It seems probable from the statements that Mr. Brown__________. A．gave no signal to show that he was turning right B．did not give any signal until he was actually turning C．failed to give a proper signal at that time D．flashed his light to show that he was going to turn 50．We would expect to find that Mr. Brown's car was damaged on its________ side. A．front    B．left    C．right    D．driver's