题目内容：

My name is Betty Sanders. I am a telephone operator (接线员). I work for University Telephone Company. My job at UTC is an interesting one. I work five days a week and my hours are from nine a.m. to five p.m. I do a lot of things. I also help people when they are in trouble.

Today, for example, I had an interesting experience. At eleven o’clock this morning, I got a call from a man. He told me where he lived and asked me to send for an ambulance (救护车）right away. I asked him if somebody was hurt, but he didn’t answer my question. He told me he needed a doctor at once, so I said I’d call an ambulance for him, but I still wanted to know what was wrong. Then he said, “Our keys are gone!” I didn’t understand that! Why could he need an ambulance just because he couldn’t find his keys? Then I found out what the trouble was.

This man and his wife left the keys on a coffee table, and later they couldn’t find them. Their little son Johnny was playing in the room, and they thought he swallowed (吞下) them.

But before I could help him, he told me he wouldn’t need an ambulance. His wife found the keys in her bag. They were there all the time.

根据短文内容回答下列问题，注意词数要求。

1.What does “UTC” mean in the first paragraph? (No more than 3 words)

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2.How long does Betty work every day? (No more than 3 words)

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3.Why did the man call Betty Sanders? ( No more than 5 words)

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4.Why did the man ask for a doctor? ( No more than 8 words)

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5.Did Betty send for an ambulance? (No more than 3 words)

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