某同学按下图所示的步骤配制好80g6%的氯化钠溶液后，将烧杯中的溶液装入试剂瓶时

I lost my sight when I was four years old by falling off a box car in a freight yard in Atlantic City and landing on my head. Now I am thirty-two. I can vaguely remember the brightness of sunshine and what color red is. It would be wonderful to see again, but a disaster can do strange things to people. It occurred to me the other day that I might not have come to love life as I do if I hadn’t been blind. I believe in life now. I am not so sure that I would have believed in it so deeply, otherwise. I don’t mean that I would prefer to go without my eyes. I simply mean that the loss of them made me appreciate the more what I had left.
Life, I believe, asks a continuous series of adjustments to reality. The more readily a person is able to make these adjustments, the more meaningful his own private world becomes. The adjustment is never easy. I felt helpless and afraid. But I was lucky. My parents and my teachers saw something in me--a potential to live, you might call it--which I didn’t see, and they made me want to fight it out with blindness.
The hardest lesson I had to learn was to believe in myself. That was basic, If I hadn’t been able to do that, I would have collapsed and become a chair rocker on the front perch for the rest of my life. When I say belief in myself I am not talking about simply the kind of self-confidence that helps me down an unfamiliar staircase alone. That is part of it. But I mean something bigger than that: an assurance that I am, despite imperfections, a real, positive person; that somewhere in the sweeping, intricate pattern of people there is a special place where I can make myself fit.
It took me years to discover and strengthen this assurance. It had to start with the most elementary things. Once a man gave me an indoor baseball. I thought he was making fun of me and I was hurt. "I can’t use this," I said. "Take it with you," he urged me, "and roll it around." The words stuck in my head. "Roll it around!" By rolling the ball I could hear where it went. This gave me an idea how to achieve a goal I had thought impossible: playing baseball. At Philadelphia’s Overbrook School for the Blind I invented a successful variation of baseball. We called it ground ball.

For the writer, the most difficult thing is to ______.
A. be sure that his future can be positive too.
B. be sure that he is a perfect person.
C. be sure that he can play baseball just like everybody else.
D. adjust himself to the reality.

All my life I have set ahead of me a series of goals and then tried to reach them, one at a time. I had to learn my limitations. It was no good to try for something I knew at the start was wildly out of reach because that only invited the bitterness of failure. I would fail sometimes anyway but on average I made progress.

针对勘察设计企业资质管理方面，专项工程设计资质的设立由( )批准。

A．住房和城乡建设部

B．国务院建设行政主管部门

C．省自治区、直辖市建设行政主管部门

D．任一行政部门

20世纪中共最后一次全国代表大会的主题是______．

A．提出社会主义初级阶段理论

B．提出走自己的路，建设有中国特色的社会主义

C．建立社会主义市场经济体制，进一步解放和发展生产力

D．高举邓 * * 理论伟大旗帜，把建设有中国特色社会主义事业全面推向21世纪

11岁的张某被人杀死在村外的芦苇丛中的小路上。公安机关对现场进行了勘验，并从现场提取了一把带血的菜刀。经过排查，侦查人员怀疑同村的田某为作案人，并从田某家搜出一件带血的衣服。公安机关于是对田某立案侦查。经过鉴定，现场提取的菜刀上留有田某的指纹，从田某家搜出的衣服上的血迹的血型与被害人的血型及菜刀上残存血迹的血型相同。田某也承认自己杀害了张某。本案中，哪些证据不属于言词证据( )

A．田某的供述

B．公安机关的现场勘验笔录

C．血型鉴定结论和对田某的指纹鉴定结论

D．现场提取的脚印

在社会治安综合治理的各项措施中，教育是维护社会治安的（）

A.首要环节

B.积极措施

C.战略性措施

D.重要措施