CBob, a student who does computer studies at Texas University, found his own parents with

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Bob, a student who does computer studies at Texas University, found his own parents with the help of Internet. The news got around soon and many of his friends came to share his happiness. Some of them even asked him to help them find jobs on the Internet.
Before he turned to Internet for help, Bob had spent one year looking for his parents who left him 26 years ago when he was a baby. Using knowledge on computer and network, Bob found out his birth information and sent a notice to Internet in hope of finding his parents. Only one day later, Bob’s dream came true.
When Bob flew to Los Angles to meet his father, Stephen, they embraced(拥抱) each other lovingly and warmly. They enjoyed the family meeting. Later on Mother’s Day, Bob met his mother Silva.
Three years ago, Stephen himself also tried hard to look for his son but his hard try ended in nothing. Bob’s try on the Internet has turned to be a happy ending.
54. Which of the following is unknown to us ?
A. Bob’s birth information B. Where Bob’s father lives
C. Why Bob’s parents left him D. What Bob does
55. Bob couldn’t find his parents a year ago because .
A. his parents didn’t want to see him B. he couldn’t get useful information
C. he didn’t want to D. he was just a student
56. Before he found his parents, Bob had to .
A. made a lot of friends B. fly to Los Angles
C. sent a notice to Internet every day D. find out his own birth information
57. How long did it take Bob to find his parents after using the Internet?
A. Only one day B. About one year C. 3 years D. 26 years54-57 CBDA

(答案→)54-57 CBDA 解析：可联系答.案.网客服索取。

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就是这个解释

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