It was a winter morning, just a couple of weeks before Christmas 2011. While most people were warming up their cars, Trevor, my husband, had to get up early to ride his bike four kilometers away from home to work. On arrival, he parked his bike outside the back door as he usually does. After working for ten hours, he returned to find his bike gone. The bike, a black Kona l8 speed, was our only transport. Trevor used it to get to work, putting in 60-hour weeks lo support his young family. And the bike was also used to get groceries(食品杂货)．saving us from having to walk long distances from where we live.1 was so sad that someone would steal our bike that l wrote to the newspaper and told them our story.
Shortly after that, several people in our area offered to help. One wonderful stranger even bought a bike, then called my husband to pick it up. Once again my husband had a way to get to and from his job. It's really fantastic that a complete stranger would offer help to someone they have never met before. People say that a smile can be passed from one person to another, but acts of kindness from strangers are even more so. This experience has had a great effect in our lives. And we believe that no matter how big or how small, an act of kindness shows that someone cares. And the results can be everlasting.
46. Why was the bike so important to the couple? Because _______.
A. they used it for work and daily life B. it was their only possession（财产）
C. it was a nice Kona l 8 speed D. the man's job was bike racing
47. We can infer from the passage that_______.
A. the couple worked 60 hours a week B. people were busy before Christmas
C. the stranger stole Trevor's bike D. life was hard for the young family
48. What do the couple learn from their experience?
A. Strangers are usually of little help. B. One-should take care of their bike.
C. An act of kindness can mean a lot. D. News reports make people famous.