Somehow Tim managed to stop his car thirty metres beyond Dave‘s burning machine. He climbed out. One of the firemen was running up the road， but he was more than a hundred metres away from the burning car. He would never get to Dave in time.
Tim‘s racing suit would not burn for about a minute even in the hottest fire. He ran to the burning car. He could see Dave in his seat with his head on the wheel. Tim took a deep breath and stepped into the fire. He took hold of Dave’s arms， pulled him out of the car and put him on the grass. Before the fireman reached him， he had Dave‘s helmet off， but Dave was no longer breathing.
“We must get him away from here，” the fireman said， “It‘s too dangerous.” He tried to push Tim to one side.
“Nobody‘s moving him.” Tom said， and shook off the fireman’s hand. “Nobody‘s moving him until a doctor comes.”
51. Tim stopped his car because ___________.
A. it was on fire
B. there was something wrong with his car
C. he wanted to help Dave
D. he wanted to get to the fire first
52. Time found Dave______________.
A. on the grass near the car
B. in the front of the car
C. under the car
53. Tim was able to reach Dave because_____________.
A. he was wearing special clothes
B. he could run very fast
C. he wasn‘t afraid of fire
D， he was driving
54. The fireman wanted to ______________.
A. pull off Dave‘s helmet
B. stop Tim helping Dave
C. put out the fire
D. bring Dave to safety
55. The writer is telling us a story about __________.
A. a car accident in a street
B. an accident in a motor-racing
D. Tim‘s success as a motorist