Gao Xiaosong, who is a famous musician, movie director and the writer of the famous song My Deskmate,
has been sent to jail (监狱) and will stay there for six months for drunk driving.
"I've nothing to say for myself and I'm willing to be punished (惩罚)," he said when he was standing in the
court. "What I want to say is that I feel sorry for what I've done. I thought alcohol (酒精) could bring me
freedom but never realized drunk driving could take away others' freedom. And now I've lost my own freedom
because of drinking. I'll obey the new road safety rules and I want to be a life-long volunteer in persuading
(劝说) others not to drive after drinking."
Anyone who drives after drinking doesn't think much of human life. If Gao had cared, he would have left his
car parked outside the restaurant and took a taxi home, and he would have thought about a road killer he would
become. It's fair to say that his behavior can not be excused in modern society. Gao may not have killed anyone, but by choosing to drive a car while under the influence of alcohol, he and the large number of others who do
the same have made the dangerous decision that may possibly hurt other people.
1. What was the reason for Gao Xiaosong's being jailed for six months?
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2. How did he feel for what he had done?
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3. Did he think he was wrong?
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4. If one drives after drinking, what may happen?
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5. What's your idea after reading this passage?
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，在0≤x<a的区域内有磁感应强度为B=0.5 T，方向垂直于xOy平面向里的匀强磁场，在x≥a、y>0的区域内有匀强电场，电场强度的大小是甲区域的π倍。现有一带正电的小球自平面上坐标原点O以沿-x轴方向的初速度v0射向甲电场区，
，已知在甲区域和乙区域内粒子运动的时间是相等的，粒子进入丙区域时的电场力与其速度垂直，且后来粒子通过了x轴，又已知粒子的带电荷量q=0.1 C，粒子的质量m=10-2 kg，试求：
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， 
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有