不等式$\left|x+1\right|\left(2x-1\right)\ge 0$  的解集是（   ）

随着产业升级和技术进步，我国技能人才与一线工人“双短缺”问题更加显现。部分企业“招工难”与劳动者“就业难”问题，在部分地区比较突出。这告诉我们（    ）

Are you looking for something fun and would you like to help other people in your free time? Then join us．
We have jobs for people of all ages；Anyone from twelve-year-old children to 80-year-old people can become one of us．
You can help people in many ways．Schools need help with taking care of children while their parents are working．Hospitals need us to look after children while their parents see a doctor．Animal lovers can help take care of those dogs and cats without homes．There is something to do for everyone．
"As a member of this group，I don’t want to get anything．Seeing the children's happy faces，I am happy，too．"said Susan，an old woman of 62．  
"I often played computer games in my free time before．Now I help older people learn how to use Computers，"said another one at the age of 18．
If everyone helps out a bit， we'll all have a better world to live in．
Interested? Call us on 3847613 or visit our website(网站)：http：//www．activol．com．

在现代运输工具中，速度最快和最慢的是（   ）