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已知关于x的一元二次方程x2﹣(2m+3)x+m2+2=0.
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井绳

    通向月亮的路并不是美国航天局首先发现的。在他们之前,在古代,我们的先人就已经发现了接近月亮的最佳方式。

    方法很简单。只需要一眼井,一汪清水,一根井绳,一颗虔诚的心。

    面对水井的时候,要让自己燥热、混乱、凶狠的心静下来,不要怀着总想征服什么的冲动,内心安静一些,清澈一些。低下你高贵的头,夸下你高贵的身子,你就会看见,从水里,从岁月深处,一轮洁净明亮的初月正向你升起,并渐渐地走向你,走进你的生活。

    美国航天局用了很大的劲爬上了月亮,只抓了几块冰冷的石头让人类看,让人类扫兴,让人类的神话和童话破灭,让孩子们面对冰冷的石头不再做美丽的梦。他们让人类离月亮越来越远,离石头越来越近。

    我父亲不知道人类的宇航船在天上折腾些什么,他心目中的月亮仍然是古时候的那个月亮。那是神秘的月亮,是嫦娥的月亮,吴刚的月亮。没读过诗的父亲也知道,李白打捞的就是水里的那个月亮。

    父亲几乎天天都要和月亮会面。他一生都在打捞水中的那个月亮。你见过我父亲在月夜里挑水的情景吗?

    他抬头望一眼天上的月亮,微笑着低下头来,就看见水井里等待出水的月亮。他弯下腰伸出手,就把那月亮打捞上来。

    两个水桶里,盛着两个月亮,一前一后。乍一看,是父亲挑着月亮;仔细看,是两个月亮抬着父亲,一闪一闪地在地上行走。

    通向月亮的路有多长?据美国航天局说,是30万公里。走了30万公里,他们到达了一块冰冷的石头。我丈量了父亲用过的井绳,全长3米。父亲通过这3米的距离,打捞起完整的月亮和美丽的月光。

    审美是需要保持距离的。取消距离,美国得到一块冰冷的石头;谦卑地怀着敬畏守着一段距离,我父亲满身披着圣洁的月光。

    我发现,美国是一个会折腾的技术员,我父亲是一个与天地精神往来的美学家。

    我记着父亲那根井绳,3米之下,就能接触到月亮;3米之上,到处是伸手可掬的白银般的月光。

同类题5

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    Four days after Dad's 67th birthday, he had a heart attack. Luckily, he survived. But something inside him had died. His enthusiasm for life was gone. He refused to follow doctor's orders, and his sour attitude made everyone upset when they visited him. Dad was left alone.

    So I asked Dad to come to live with me on my small farm, hoping the fresh air would help him adjust. Within a week after he moved in, I regretted the invitation. He criticized everything I did. I became frustrated. Something had to be done.

    One day I read an article which said when given dogs, depressed patients would be better off. So I drove to the animal shelter that afternoon. As soon as I got there, a pointer's eyes caught my attention. They watched me calmly.

A staff member said: “He got here two weeks ago and we've heard nothing. His time is up tomorrow.”

    I turned to the man in horror. “You mean you're going to kill him”

    “Ma'am,” he said gently. “We don't have room for every unclaimed dog.”

    The police's calm brown eyes awaited my decision. “I'll take him,” I said.

    I drove home with the dog on the front seat beside me. I was helping it out of the car when Dad walked onto the front porch. “Look what I got you!” I said excitedly.

Dad wrinkled his face. “I don't want it,” he muttered, turning back towards the house. Then, suddenly, the dog pulled free from my grasp. He sat down in front of my Dad.

    Dad's anger melted, and soon he was hugging the dog.

    This was the beginning of a warm friendship. Dad named the dog Cheyenne. Together they spent long hours walking down dusty lanes and relaxing on the banks of streams.

    Dad's bitterness faded, and he and Cheyenne went on to make many friends. Then, late one night two years later, I felt Cheyenne's cold nose burrowing (搜寻) through my bed covers. He had never before come into my bedroom at night. I ran into my father's room and found that he had passed away.

    Two days later, my shock and grief deepened when I discovered Cheyenne lying dead beside Dad's bed. As I buried him near their favorite stream, I silently thanked the dog for restoring Dad's peace of mind.