問題詳情：
In what can only be described as a heroic act，a golden retriever managed to save his owner’s life by lying on top of him for almost 24 hours to keep him from freezing to death after slipping on ice and breaking his neck.
On New Year's Eve，64-year-old Bob，who chose not to reveal his last name for privacy reasons，of petoskey，Michigan，was watching a football game between Clemson and Ohio State．It was around 10：30 p．m．when he decided to go outside and fetch some more wood for his fireplace wearing only long underpants，slippers and a shirt．He had taken the short，15-foot walk to the firewood shed thousands of times before，but this time his poor choice of footwear made him slip，and the fall left him unable to move．
“I was Screaming for help，but my nearest neighbor is about a quarter-mile away and it was 10：30 p．m.，but my Kelsey came，” Bob recalls．“By morning my voice was gone and I couldn’t yell for help，but Kelsey didn’t stop barking．She kept barking for help，but never left my side．She kept me warm and alert．I knew I had to hold on through this and that was my choice to stay alive．”
21．Who saved Bob’s life?
A．His friend． B．His neighbor． C．His son． D．His dog．
22．What was the reason for Bob’s slipping?
A．He seldom went out at night．
B．He didn’t wear proper shoes．
C．It was too dark to see clearly．
D．The weather was freezing cold．
23．What can be learned about Bob from the story?
A．He was shy in public．
B．He liked playing football．
C．He lived all by himself．
D．He got on well with neighbors．
【回答】
DBC
知識點：閱讀理解
題型：閱讀理解
