题目

The internet has become part of young people ‘life ___37___reports shows  that 38% students often use the internet , moet of them get____38____ (use )   information on the internet to help in their studies students. But many student don’t use it _____39_____ d  good way .some play games too much, some visit websites they should’t   look at ,so bad things may happen   _____40_____ students spent too much time on the internet. ___41___    use the internet _____42_____ (proper).Now we have a textbook, ___43___ uses many examples___44___ (teach)student some good way to us一物体从水平桌面上以5m/s的速度飞出，桌面离地的高度为0.8m，求：（1）物体在空中运动的时间？（2）物体落地点离桌边的水平距离？