Patricia was born in Michigan and grew up in California. When she was a little girl, she often stayed with her grandparents who lived in Union City, Michigan. One summer day, a meteorite (流星)____ (fall) from the sky, right into her grandparents' backyard! Before that, her grandparents had lived a ____'kwaət life on their farm. Now things were ____from before. They had so much to do. People came to see the meteorite. The professors from the ____juːnɪ'vɜːsɪtɪ came to study it and analyze (分析) it. Her grandparents had never talked to so many people in____(they) lives! Everything changed.

    As you can guess, no one in the town had ever____(see) a meteorite before! They were confused (困惑) and didn't know____to do. Some people thought it would bring them good____(lucky) if they touched it.

    Patricia loves to tell the story about her meteorite and even today, she carries a piece of the meteorite with her____weər'evə she goes. When I met her, she let all of us touch it and make a____. What might you wish for if you could meet Patricia and see her meteorite?

某些物质在温度很低的情况下，电阻就变成0，这种现象叫超导现象．如果把超导现象应用于实际，则（　　）

命题p：：若在边长为1的正方形ABCD内任取一点M，则|MA|≤1的概率为 $\frac{\pi }{4}$ ．命题q：设 $\overrightarrow{a}$ ， $\overrightarrow{b}$ 是两个非零向量，则“ $\overrightarrow{a}\cdot \overrightarrow{b}$ =| $\overrightarrow{a}\cdot \overrightarrow{b}$ |”是“ $\overrightarrow{a}$ 与 $\overrightarrow{b}$ 共线”的充分不必要条件，那么，下列命题中为真命题的是（   ）