题目内容

Task 10One of the things I always believe is that no matter how bad something is, you can take something positive out of it. The one time I wasn’t sure of that was on September 11.I usually wake up a 6:30 or 7:00 in the morning. That day, I happened to wake up earlier. I turned on the TV and I saw that a plane had crashed (撞击) into the North Tower of the World Trade Center. My first reaction (反应) was that it was a terrible accident. Then I saw another plane fly into the South Tower and I realized that I was witnessing (目击) an act of terrorism.My wife and I spent the day watching the terrible pictures over again. When I watched family members looking for their loved ones, the pain in their eyes was something I would never forget. I couldn’t understand how something this terrible could have happened.It wasn’t until a few weeks after September 11 that I began to see that perhaps some good did come from this tragedy (悲剧). People seem different now, more understanding, more tolerant (宽容的). Little things that seemed to be such a trouble before are no longer big things. Personally, I am more tolerant than I was. I realize life is too short, and too precious (珍贵的), to let myself get worried over small things. I’ve learned also that you can’t take things for granted. Things change in the blink of an eye. People go to work and don’t come back. One moment they’re living and the next minute they’re not. And, it doesn’t matter who you are, there is nothing you can do about it. We never know when our time here will be over, so we all need to make the most of every minute we have.You try to learn from what happened. You can’t be used up by it. You can’t live by it. All you can do is just live.6. The word “positive” in the passage probably means ______.A. terrible B. bad C. good D. real7. What did the writer see after he turned on the TV that morning?A. A fire starting B. A plane flyingC. A terrible accident D. An act of terrorism.8. From September 11, the writer had realized that___________.A. people should make the most of every minute they haveB. he has become less tolerant towards othersC. he should get worried about little thingsD. life is too short to care about others.9.Where did the act of terrorism happened?A. In the United States B. In JapanC. In France D. In Australia10. What’s the best title of this passage?A. A Report about September 11B. The Tragedy of September 11C. September 11 and My FamilyD. September 11 and My Turn.

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两动点在运动过程中加速度矢量始终相等,这两点的运动轨迹( )。

A. 一定相同
B. 不一定相同
C. 一定不相同

动点相对于动坐标系的运动称为( )。

A. 牵连运动
B. 相对运动
C. 绝对运动
D. 圆周运动

动点的牵连速度是指该瞬时牵连点的速度,它相对的坐标系是( ) 。

A. 动坐标系
B. 不必确定的
C. 定坐标系
D. 定系或动系都可以

当点的速度与切向加速度的指向相同时,点作( )运动。

A. 加速
B. 减速
C. 匀速
D. 匀加速

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