从下面方框中选择适当的单词并用其正确形式填入短文空格内，使短文意思正确，通顺，每词限用一次。
Parents often think their babies are very special. They want others to _小题1:_their children. For this reason, they sometimes give their children unusual _小题2:. They may choose names such as Chelma, Ukiah, or Elvira. There are some advantages to this practice. A child _小题3:_ an uncommon name who may feel special. _小题4:, sometimes we remember people with unusual names _小题5:_ than we remember people with ordinary names.
_小题6:_, unusual names can cause problems. They can be hard for teachers and friends to pronounce. They can also be hard to spell, _小题7:_ computers may automatically(自动的) change them. For example, Jule may become July. Some people may have a bad impression on an unusual name _小题8:__ they even meet the person. __小题9:__ of all, other children sometimes don’t like kids with uncommon names. The message for parents is, “ Think _小题10:_ before you give your child an unusual name.”
固定，质量为
kg的小球穿在光滑的细杆上静止于细杆底端O点，今有沿斜面向上的力F作用于小球上，经时间
s后停止，小球沿细杆运动的部分
图像如图乙所示（
，
）．试求：
和0.2～0.4s内的加速度
；
