阅读下面短文，并按照题目要求用英语问答问题（请注意问题后词数要求）。
〔1〕My mother always told us there is no use crying over spilled milk. That means you should not get angry when something bad happens and cannot be changed. She also told us you have to break some eggs to make an omelet（煎蛋卷）. This means you have to do what is necessary to move forward.
〔2〕My mother believed you are what you eat. A good diet is important for good health. She would always give us nutritious food. She liked serving us meat and potatoes for dinner. Meat and potatoes can also mean the most important part of something. It describes someone who likes simple things.
〔3〕My father was also a good and honest person. People said he was the salt of the earth， because he would never pour salt on a wound, or make someone feel worse about something that was already a painful experience. However, sometimes he told us a story that seemed bigger than life. So we had to take it with a grain of salt. That is, we could not believe everything he told us.
〔4〕My manager at work does not always know what is going on in our office. Yet she is right about one thing: there is no such thing as a free lunch. Something may appear to be free, but there may be a hidden cost. When we fail to see problems at work, my manager tells us to wake up and smell the coffee. We need to pay more attention and fix the problem. I once made a big mistake at the office and felt foolish. I had egg on my face.
〔5〕Over the weekend, my friend invited me to watch a football game on television. But I do not like football. It is not my cup of tea.
〔6〕I hope I have given you food for thought, that is, something to think about.
小题1:What is the main idea of the whole passage? ( within 9 words)
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小题2:What would the author’s mother tell them to do when problems came up?
( within 7 words)
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小题3:If someone tells you a story that seems bigger than life , what should you do ?
( within 8 words)
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小题4:What can you say if your face turns red because of a foolish mistake according to the passage? ( within 8 words)
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小题5:Explain the underlined sentence in Paragraph 5. ( within 7 words)
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① 
② 
m/s 
因弹性碰撞后速度交换
m/s，解上式有h=0.5m 
③ 
的速度开始作圆周运动，
⑤ 
⑥ 
，n=10次。