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阅读下面短文，完成短文后的问题。

A man wondered why an elderly lady was all alone on a cruise ship. He noticed that the staff on the ship all knew her. Curious, he asked a waiter about the lady, half-expecting to hear that she owned the cruise line. However, all the waiter knew was that she had been on the last four cruises, back to back.

As he left the dining room one evening, he caught her eye and stopped to say hello. He asked, “I understand you’ve been on this ship for the last four cruises. ”

She replied, “Yes, that’s true.” “I don’t understand,” he said. Without waiting, she replied, “It’s cheaper than a nursing home（养老院）. The cost for a nursing home is at least $200 a day. Here on the cruise, I can get a long-term discount（折扣） price of ”$135 a day, That leaves $65 a day for extra. I can enjoy up to 10 meals a day of fantastic food through room service. There are also free pools, an exercise room and nightly shows. Clean daily necessities are provided every day, without needing to ask. They treat you like a valued customer, not just a patient. An extra $5 worth of tips will have all the staff happy to help you. ”

“I have the chance to meet new people every 7 or 14 days! Is the TV broken? Need to change a light bulb（灯泡）? No problem! They will fix everything soon and say sorry for the problems. There is always a doctor on board. This is how I want to spend the later years of my life. ”

1．Why was the man curious about the elderly lady on the cruise ship?
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2．What did the elderly lady share about her choice to be on the cruise ship?
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3．What did the elderly lady want to express by the underlined sentence?
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4．How long did the cruise ship stay at sea each time?
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5．What can we learn about the elderly lady from the story?
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