6. Good solutions and new ideas are often the result of a change in perception.

5. It is often disappointing to find that other people do not feel comfortable together with someone who is disabled.

4. One of the teachers at the special education college says that their aim is to help disabled students understand that they can play a valuable role within society.

3. Today there are more opportunities for disabled people to develop their potential, live a rich life and make a contribution to society.

2. Creative thinking is a conscious effort to break away from old thought patterns in order to explore new possibilities.

1. I know people are trying to help, but I wish they wouldn't treat me as if I were a child.

5、(12分)某种商品现在定价每年p元，每月卖出n件，因而现在每月售货总金额np元，设定价上涨x成(1成＝10%)，卖出数量减少y成，售货总金额变成现在的z倍．

(1)用x和y表示z；(2)若y＝x，求使售货总金额有所增加的x值的范围．

4．甲乙两地相距s千米，汽车从甲地匀速行驶到乙地，速度不得超过c千米／小时，已知汽车每小时的运输成本(单位：元)由可变部分和固定部分组成：可变部分与速度v的平方成正比，其系数为b，固定部分为a元，为了使全程运输成本最低，汽车应以多大速度行驶？

3．在测量某物理量的过程中，因仪器和观察的误差，使得n次测量分别得到，某n个数据，我们规定所测物理量的＂最佳近似值＂a是这样一个量：a与其它近似值相比较，与各数据的差的平方和最小，依次规定，从推出的a＝　　　　　　　　．

2．拟定从甲地到乙地通话m分钟的电话费由f(m)＝1．06(0．5［m］+1)　(元)决定，其中m＞0，［m］是大于或等于m的最小整数，则从甲地到乙地通话时间为5．5分钟的电话费为(　　)

A．3.71元　B．3.97元　　C．4.24元　D．4.77元