My mom's entire life changed in the matter of a few seconds.While driving home late one night，my parents' SUV was hit from behind by a drunk driver traveling 70 miles per hour.Dad was killed instantly.Mom was thrown from the SUV and people found her on the side of the road.
Once I saw my mom in the hospital，I knew she had a long road ahead of her.She had crushing injuries to her arm and shoulder，and her elbow was dislocated in three places，leaving it permanently bent.
Although it took my mom a long time to physically recover from the accident，it was only a short time before my mom's positive spirit returned.Throughout her journey of recovery，my mother rarely complained.I could see the pain in her eyes during physical therapy，but never heard her question why this had happened to her.
In fact，I remember one “role reversal” where we both just had to laugh.Mother had lost a lot of weight during her hospital stay，so I bought her some new clothes.I had to dress her at first，but she challenged herself every day.Finally，when she was able to get dressed on her own，she looked at me in the mirror and started laughing.While she appreciated the clothes I had bought，she really hated the styles I had chosen for her and couldn't wait to go shopping on her own.I started laughing too；she had struggled for months to put on these clothes that she didn't even like!
It reminded me of when I was in kindergarten and my mother made me wear dresses when I just wanted to wear pants.It was a funny role reversal for both of us and I understood how she felt.
It took my mom two long years to gain back her strength and limited flexibility.Those few years were a traumatic time for our entire family.Mom had to overcome many challenges.But she found that strength of will and a sense of humor can get you through the toughest times，even when you don't think you have anything to smile about.
40．The author presented the story by ________.
A．asking drivers to pay attention while driving
B．reminding readers not to drive too fast
C．explaining the result of driving after drinking
D．describing the scene of the accident
41．By saying “a long road ahead of her”，the author meant ________.
A．it would take her mother a long time to recover
B．her mother could continue to live for a long time
C．her mother needed to walk every day to get better
D．her mother would pay a lot for the treatment
42．The example of “role reversal” is used to prove ________.
A．her mother was particular about dressing
B．her mother behaved like a girl in the kindergarten
C．her mother could keep a positive attitude
D．her mother had an eye for beautiful clothes
43．The best title for the passage may be________.
A．Remain Clam When Death Drawing Near
B．Keep Your Head Up in Case of Trouble
C．Show Real Courage in Front of Danger
D．Persist No Matter What Your Troubles Are