Mr Jackson was blind from birth. He owned a fruit 1 on a very busy street. 2 he was visually disabled, he ran his business pretty handsomely. He could see nothing and he could only 3 the things within his reach. 4 he was able to handle it and was content with everything he had.

    One day his son came to him. He told Mr Jackson in 5 that he read in the newspaper of a 6 who could operate on his eyes and allow him to see. The father and son traveled to the doctor and paid for the 7.

    After the operation, the doctor asked Mr Jackson, “What is the first thing you are 8 to see when I take the bandages off?” He replied, “I really want to see my beautiful 9 on my stand!”

    The doctor and the son 10 Mr Jackson down to the busy street where his fruit stand had been located for so many years. The doctor 11 unwrapped the bandages 12 he could lay his eyes on the beautiful fruit! Mr Jackson was so full of 13 that he could finally see his life's work—taking care of his fruit! After a few hours of 14 his beautiful fruit stand, he looked down the street both ways and saw there were quite a few fruit stands in both directions. He looked 15 the street and saw many other fruit stands. He spent so much time looking at other people's fruit stands and 16 the competition. Soon his own business 17.

    From Mr Jackson's failure, we should know that everyone is a 18 individual with different fingerprints, DNA and thinking. What we need to do is just be ourselves and 19 everyone else to be who they are. Mind our own business and we should never be afraid of 20.

下列函数关系式中，y是x的二次函数的是（　　）

       ①以“请给我                   ”为题作文。

       提示：先将题目补充完整，然后作文。

       ②滋味是一种感觉、一种体验。生活的滋味很多，“最爱湖东行不足”是白居易喜的滋味，“日暮乡关何处是”是崔颢愁的滋味，“沉醉不知归路”是李清照乐的滋味，“燕然未勒归无计”是范仲淹苦的滋味。

       请以“滋味”为话题作文。

       提示：题目自拟，立意自定。

下列有关显微镜的叙述，正确的是（　　）