题目:
用于稀土增感屏的稀土元素主要是
A.锕系
B.钡系
C.镎系
D.镧系
E.碳系
答案:
参考答案:D
解析:所谓稀土元素,是钇系和镧系 15种元素的总称。
用于稀土增感屏的稀土元素主要是
A.锕系
B.钡系
C.镎系
D.镧系
E.碳系
参考答案:D
解析:所谓稀土元素,是钇系和镧系 15种元素的总称。
阅读理解.
Years ago, I lived in a building in a large city. The building next door was only a few feet away from
mine. There was a woman who lived there, whom I had never met, yet I could see her seated by her window each afternoon, sewing (做针线活) or reading.
After several months had gone by, I began to notice that her window was dirty. Everything was unclear through the dirty window. I would say to myself, "I wonder why that woman doesn't wash her window. It
really looks terrible. "
One bright morning I decided to clean my flat, including washing the window on the inside.
Late in the afternoon when I finished the cleaning, I sat down by the window with a cup of coffee for a
rest. What a surprise! Across the way, the woman sitting by her window was clearly visible. Her window was clean!
Then it dawned on me. I had been criticizing (批评) her dirty window, but all the time I was
watching hers through my own dirty window.
That was quite an important lesson for me. How often had I looked at and criticized others through the dirty window of my heart, through my own shortcomings (缺点 ) ?
Since then, whenever I wanted to judge (评判) someone, I asked myself first, "Am I looking at him
through my own dirty window?"
Then I try to clean the window of my own world so that I may see the world about me more clearly.
1. The writer couldn't see everything clearly through the window because __________.
A. the woman's window was dirty
B. the writer's window was dirty
C. the woman lived nearby
D. the writer was near-sighted
2. The writer was surprised that_________ .
A. the woman was sitting by her window
B. the woman's window was clean
C. the woman did cleaning in the afternoon
D. the woman's window was still terrible
3. "it dawned on me" probably means "___________".
A. I began to understand it
B. it cheered me up
C. I was badly hurt
D. it began to get dark
4. It's clear that__________.
A. the writer had never met the woman before
B. the writer often washed the window
C. they both worked as cleaners
D. they lived in a small town
5. F'rom the passage, we can learn _________.
A. one shouldn't criticize others
B. one should often make his window clean
C. one must judge himself before he judges others
D. one must look at others through his dirty window
给下列加粗的字注音。
诗墙是你的头脑,它荟萃了两千年文化精品,融诗词、书法、美术、镌刻于一炉( ),获得了“吉尼斯之最”。壶瓶山是你的冠冕( ),它海拔2098.7米,保存了大量的古老珍稀植物及种群,被誉为“地球怪圈(北纬30度)上的自然迷宫。”奔腾不息的沅江是你的裙带,屈原曾在这里行吟( ),沈从文曾用他清丽热切的文字,抒写了两岸灵秀的风光和独特的世态人情。
典型的微机系统总线由()三部分组成。
A、数据总线、地址总线与控制总线
B、数据总线、地址总线与接口总线
C、系统总线、设备总线与接口总线
D、数据总线、控制总线与信息总线
液氯工段关键装置()。重点部位:液氯罐区、液氯充装。
企业法人是指依据《中华人民共和国企业法人登记管理条例》、《中华人民共和国公司登记管理条例》等,经各级工商行政管理机关登记注册的企业法人。指具有符合国家法律规定的资金数额、企业名称、组织章程、组织机构、住所等法定条件,能够独立承担民事责任,经主管机关核准登记取得法人资格的社会经济组织。
根据上述定义,下列属于企业法人的是( )。
A.老张用大部分积蓄在村里开了个小卖部
B.在外打工多年的周某,回老家以开饭店为生
C.大学毕业后,孙某和同学合伙在大学城附近经营快餐店
D.黄某和某单位合作在郊区开办了生产加工玩具的工厂