问题 选择题

根据下列金属的熔沸点:

其中不能形成合金的是(  )

A.Cu与Al

B.Fe与Cu

C.Fe与Na

D.Al与Na

答案

答案:C

题目分析:由表中数据可知,钠的沸点为883℃,铁的熔点为1535℃。而合金的形成必须是两种金属熔化成液态后的混合。而当铁熔化的时候,金属钠已经变成了气态,因此二者不能形成合金。

点评:对合金的考查,属于比较少见的题目。但是本题结合了图表数据的分析,属于较为新颖的题目,考生在掌握课本相关知识点的同时,应加强对图表的数据分析能力。

问答题

(二)背景资料 某办公楼工程,建筑面积98000㎡,劲性钢筋混凝土框筒结构。地下三层,地上四十六层,建筑高度约203m。基坑深度15m,桩基为人工挖孔桩,桩长18m。首层大堂高度为12m,跨度为24m。外墙为玻璃幕墙。吊装施工垂直运输采用内爬式塔吊,单个构件吊装最大重量为12t.合同履行过程中,发生了下列事件:事件一:施工总承包单位编制了附着式整体提升脚手架等分项工程安全专项施工方案,经专家论证,施工单位技术负责人和总监理工程师签字后实施。 事件二:监理工程师对钢柱进行施工质量检查中,发现对接焊缝存在夹渣、形状缺陷等质量问题,向施工总承包单位提出了整改要求。 事件三:施工总承包单位在浇筑首层大堂顶板混凝土时,发生了模板支撑系统坍塌事故,造成5人死亡,7人受伤。事故发生后,施工总承包单位现场有关人员于2小时后向本单位负责人进行了报告,施工总承包单位负责人接到报告1小时后向当地政府行政主管部门进行了报告。 事件四:由于工期较紧,施工总承包单位于晚上11点后安排了钢结构构件进场和焊接作业施工。附近居民以施工作业影响夜间休息为由进行了投诉。当地相关主管部门在查处时发现:施工总承包单位未办理夜间施工许可证;检测夜间施工场界噪声值达到60分贝。 [问题]

事件三中,依据《生产安全事故报告和调查处理条例》(国务院第493号令),此次事故属于哪个等级纠正事件三中施工总承包单位报告事故的错误做法。报告事故时应报告哪些内容

阅读理解

It is impossible to think about “growing up” in modern America without considering “youth culture” which every young person—even those who do not attend public schools—is confronted by and must deal with. It is impossible to be so isolated that we are untouched by the surrounding culture. Nor should we wish to be—as we are called to be—salt and light in a very confused and broken world. Popular culture deserves neither uncritical acceptance nor knee-jerk rejection, but thoughtful critique(批评).

On the contrary, China paid too little attention to youth culture in the past. However, with society developing, more and more people have realized the importance of analyzing, understanding and promoting youth culture.

About 100,000 young Chinese people from all over the world will attend the first China Youth Culture Week scheduled to open Saturday in Shenzhen’s China Folk Culture Villages, a press conference was told Thursday.

A series of cultural activities will be staged from Saturday to Wednesday, including a huge performance expected to challenge for a listing in the Guinness Book of World Records.

About 10,000 young people will attend the opening ceremony Saturday. A final list of the Chinese Youth Idol Award to five outstanding young Chinese was announced at the conference. They are the country’s first astronaut, Yang Liwei, Chinese NBA star, Yao Ming, IT entrepreneur, Ding Lei, anchorperson, Wu Xiaoli, and Olympic Games gold medalist, Deng Yaping. The youth idols were selected by

Chinese teenagers with 380,000 votes cast nationwide.

During the past two months, the organizers received more than 3,000 applications from young people in Hong Kong and Macao who wanted to take part in the performance.

52. Which of the following can replace the underlined word “confronted by”?

A. Concerned about.        B. Thought of.  C. Confused with.    D. Faced with.

53. Which of the following is TRUE according to Paragraph 1?

A. People can be isolated from the surrounding culture.

B. The American youth accept popular culture without any thought.

C. People shouldn’t refuse popular culture totally.

D. Americans ignore cultures at all while growing up.

54. The list of the five Chinese youth idols indicates that ____.

A. success is considered the most important factor in the Chinese youth’s values

B. the Chinese youth don’t care about their idols’ personalities

C. there are only five people admired by the Chinese youth

D. the parents want to set those people as examples

55. What can we infer from this passage?

A. America paid too much attention to youth culture.

B. China pays more attention to youth culture nowadays.

C. Chinese youth admire movie stars and regard them as their idols.

D. America thinks their youth are more important than the Chinese youth.