Some say every day miracles are predestined (注定的)---- All that’s necessary is readiness, the right circumstance for the appointed meeting. And it can happen anywhere.  
In 1999, 11-year-old Kevin Stephan was a bat boy for his younger brother's Little League team in Lancaster, New York. It was an early evening in late July. Kevin was standing on the grass away from the plate, where another youngster was warming up for the next game. Swinging his bat back and forth, and giving it all the power an elementary school kid could give, the boy brought the bat back hard and hit Kevin in the chest. His heart stopped.  
When Kevin fell to the ground, the mother of one of the players rushed out of the stands to his aid. Penny Brown hadn't planned to be there that day, but at the last minute,she had changed  her shift (轮班) at the hospital, and she was given the night off. Penny bent over the senseless boy, his face already starting to turn blue, and giving CPR, breathing into his mouth and giving chest compressions (按压). And he came to life.
After his recovery, he became a volunteer junior firefighter, learning some of the emergency first-aid techniques that had saved his life. He studied hard in school and was saving money for college by working as a dishwasher in a local restaurant in his spare time.
Kevin, now 17, was working in the kitchen when he heard people screaming, customers in confusion, employees rushing toward a table. He hurried into the main room and saw a woman there, her face turning blue, her hands at her throat. She was choking .
Quickly Kevin stepped behind her, wrapped his arms around her and clasped his hands. Then, using skills he'd first learned in Scouts, the food that was trapped in the woman's throat was freed. The color began to return to her face.
“The food was stuck. I couldn't breathe,” she said. She thought she was dying. “I was very frightened.”
Who was the woman?
Penny Brown.
Kevin Stephan fell to the ground and fainted probably because ________.

A．he stood close to the boy who was swinging his bat

B．he suffered from heart attack all of a sudden

C．he was too excited when watching the game

D．he swung the bat too hard to keep his balance

Which of the following statements is True of Kevin Stephan?

A．He was hit on the face by a boy and almost lost his life.

B．He was a volunteer junior firefighter, teaching the players first-aid skills.

C．He worked part-time in a local restaurant to save money for college.

D．He saved Penny Brown though he didn’t really know how to deal with food choke

Why did Penny Brown change her shift and was given the night off that night?

A．She was there to give her son directions.

B．She volunteered to give medical services.

C．She was a little worried about her son’s safety.

D．She came to watch her son’s game and cheered him .