There are all kinds of machines. They 1 in many different ways. One kind of machine is called a computer. A computer can do many things. A computer can do math problems. People can also do math problems. But they cannot do it 2 a computer.
    Computers remember things. Computers do 3 people tell them. People cannot remember as many things as computers. Computers help tell 4 the weather will 5.Computers help fly rockets and spaceships.
    These are 6 of ways computers are used. They are used in7 ways. Some computers do just 8 things. Some computers can do a lot of things. There are 9 computers. There are big computers. There may be computers in your school. Do you 10 what they do?

已知不等式$a{x}^2+bx+c>0$的解集为$\left\{x|2<x<4\right\}$，则不等式$c{x}^2+bx+a<0$的解集为 （　　）

（I）若曲线y= f（x）在点(1, $f\left(1\right)$ )处的切线与X轴平行,求a：

(II)若 $f\left(x\right)$ 在x=2处取得极小值，求a的取值范围。