根据短文内容，选择最佳答案。

Scientists say life will be very different in 2050.First,there will be no TV channels (频道) . People will choose a programme (节目) from a computer and watch it on the television. We will get information on the computers only.

   Second, water will be a big problem. In many places, people won't have water to drink.

Third, cars will use new and clean fuels and they will go very fast. There will be a computer in every car. And computers will control the cars and there won't be any accidents (事故) .

120000____

90800000000____

多音字组词。

折 zhē  ____    zhé ____    shé ____

解不等式组 $\{\begin{array}{c}x-3\left(x-2\right)\le 4\\ \frac{1+2x}{3}>x-1\end{array}$ ，并把它的解集在数轴上表示出来．