已知$\overrightarrow{a}$=（λ+1，0，2），$\overrightarrow{b}$=（6，2μ﹣1，2λ），若$\overrightarrow{a}$∥$\overrightarrow{b}$，则λ与μ的值是____ 

    A robot is a special kind of machine. It is a machine that can follow instructions( 命令).

    1 it is a machine, it hardly makes mistakes or gets tired. And it 2  complains, unless you tell it to!

    Robots are around us. Some robots are used to 3  things. For example, robots can help make cars. Some robots are used to explore(勘察) dangerous places. Some robots can help clean your house. Some robots can even 4  human languages. They can be used to help answer telephone calls. Some robots look like 5 , but most robots do not. They just look like machines.

    Long ago, people imagined 6 . Over 2,000 years ago, Homer, a famous poet, imagined robots. His robots were made of gold, but they were not 7 . Nobody was able to make a real robot at that time. The  8  real robot was made in 1961. It was called Unimate.

    In the future, we will have even more robots. They will do things that we can't do, or that we don't want to do, or that are too 9 for us. For example, robots will help us fight fires and illnesses and 10 things. They will help make our life better.

以数轴上的原点O为圆心，3为半径的扇形中，圆心角∠AOB=90°，另一个扇形是以点P为圆心，5为半径，圆心角∠CPD=60°，点P在数轴上表示实数a，如图．如果两个扇形的圆弧部分（（AB和CD））相交，那么实数a的取值范围是（      ）