把下面的词语补充完整

____重心长      优____自在     勃勃____

根据短文内容和所给中文提示，写出短文空白处各单词的正确形式。每空限填一词。
      These days, a Chinese girl’s travel diary has become a hit online.
Zhao Xing, with only a ____ （地图）, a travel bag and 30 yuan, left the Chinese mainland for the ____ （第一）time to Taiwan. At the ____ （机场）, she was helped by a man who even told her his phone number. A bus driver was kind enough to ____ （叫醒）her up when she fell asleepon the ride.
       In Taiwan, Zhao told the man who ____ （给）her a ride that she was from Beijing. The man asked if there was ____ （任何事）else he could do to help make her journey ____ （更好的）.
      “After coming back and thinking over everything I’ve experienced, I realized that the people impressed me the most, not the beautiful scenes or tasty food,” Zhao ____ （写）in her online diary.
      From Beijing to Taiwan, so close, so ____ （遥远的）away. Zhao’s wish is to encourage others to realize their ____ （自己的）dreams of making the world a smaller, more friendly place for all.

质量相等的A、B两球在光滑水平面上沿同一直线相向运动．如图所示，若以向左为运动的正方向，A球的速度为v₁=﹣2m/s，B球的速度为v₂=6m/s，某时刻A球与B球发生相互碰撞，碰撞后仍在一条直线上运动，则碰后A、B球速度的可能值是（   ）

填空

《赠刘景文》的作者是____朝诗人____，字____，号____，他是____之一。