牧草粗蛋白质

材料一：

北魏时期传汉族服饰的少数民族贵族

材料二：东汉末年以后，北方各少数民族陆续内迁，与汉族人民长期生活在一起，相互学习，相互影响，关系越来越密切……——摘自某学者的文章

材料三：“五十六个星座，五十六枝花，五十六族兄弟姐妹是一家。五十六族语言，汇成一句话，爱我中华，爱我中华、爱我中华……”——摘自第四届全国少数民族传统体育运动会会歌

请回答：

（1）据材料可知，民族融合是我国古代民族关系的发展趋势。促成这种趋势的基本因素有很多，请你选择___________________

①世袭制的推行②各民族间的长期交往③西方列强的侵略

④统治阶级的改革⑤世界反法西斯战争的胜利⑥社会经济的发展

⑦各民族 * * 之间的战争⑧海外贸易频繁⑨中外文化交流

（2）请举一个可以说明我国古代民族融合的例子。

___________________________________________________________________________________________

（3）材料三说明：中国是一个统一的多民族国家的，你认为在这样的一个国家里，应当怎样处理民族关系？

___________________________________________________________________________________________

阅读理解。

     Engineering students are supposed to be examples of practicality and rationality (理性), but when it comes

to my college education I am an idealist and a fool. In high school I wanted to be an electrical engineer and, of

course, any reasonable student with my aims would have chosen a college with a large engineering department, many famous professors and lots of good labs and research equipment. But that's not what I did.

     I chose to study engineering at a small liberal-arts (文科) university that doesn't even offer a major in

electrical engineering. Obviously, this was not a practical choice; I came here for more noble reasons. I wanted

a broad education that would provide me with flexibility and a value system to guide me in my job. I wanted to

open my eyes and expand my vision by communicating with people who weren't studying science or

engineering. My parents, teachers and other adults praised me for such a wise choice. They told me I was

wise and grown-up beyond my 18 years, and I believed them. 　

     I headed off to the college and sure I was going to have an advantage over those students who went to big

engineering "factories" where they didn't care if you had values or were flexible. I was going to be a complete

engineer: technical expert and excellent humanist all in one. 　

     Now I'm not so sure. Somewhere along the way my noble ideas crashed into reality, as all noble ideas

finally do. After three years of struggling to balance math, physics and engineering courses with liberal-arts

courses, I have learned there are reasons why few engineering students try to reconcile engineering with

liberal-arts courses in college. 　

     The reality that has blocked my path to become the typical successful student is that engineering and the

liberal arts simply don't mix as easily as I supposed in high school. Individually they shape a person in very

different ways. The struggle to reconcile the two fields of study is difficult.

1. Why did the author choose to study engineering at a small liberal-arts university?

A. He intended to become an engineer and humanist.

B. He intended to be a reasonable student with noble ideals.

C. He wanted to be an example of practicality and rationality.

D. He wanted to communicate with liberal-arts students.

2. According to the author, by communicating with people who study liberal arts, engineering students

   can _______.

A. become noble idealists

B. broaden their knowledge

C. find a better job in the future

D. balance engineering and liberal arts 

3. Which word below can replace the underlined word "reconcile"?

A. confuse

B. compare

C. combine

D. compete

4. The author suggests in this passage that _______.

A. liberal-arts students are supported to take engineering courses

B. technical experts with a wide vision are expected in the society

C. successful engineering students are more welcomed in the society

D. engineering universities with liberal-arts courses are needed

以下对BOD5测定的论述（）是正确的。

A、测定BOD5用的稀释水中加入营养物质的目的是为引入微生物菌种；

B、对于不含或少含微生物的工业废水，在测定BOD5时应进行接种；

C、对于工业废水，由重铬酸钾法测得的COD值来确定稀释倍数；

D、水样的pH值若超过6.5～7.5范围时，可用盐酸或氢氧化钠稀溶液调节至pH值近于7，但用量不要超过水样体积的5％。

由于实际油层温度一般都高于30℃，而且盐酸最高使用温度也就28℃左右，因此在实际施工条件下，是不会产生（）沉淀的。

接上题，月末，行政管理部门报销日常管理支出1500元。会计部门经审核准予报销，并以现金补足定额。