依次填入下列句子横线处的词语,最恰当的一组是( ) ①科学家们知道,研究和理解海

题型:单项选择题

问题:

依次填入下列句子横线处的词语,最恰当的一组是( )
①科学家们知道,研究和理解海洋动物的独特语言,需要______累月的时间。
②严厉打击社会上的黑社会性质的恶势力,______它们滋生的土壤,是公安机关义不容辞的责任。
③他听到了群众的大声______,仍头也不回地走到车里。

A.长年 铲除 叱责
B.常年 清除 叱责
C.常年 清除 斥责
D.长年 铲除 斥责

考点:国家公务员行政职业能力测试行政职业能力测试
题型:单项选择题

设a1=32﹣12,a2=52﹣32,…,an=(2n+1)2﹣(2n﹣1)2(n为大于0的自然数).

(1)探究an是否为8的倍数,并用文字语言表述你所获得的结论;

(2)若一个数的算术平方根是一个自然数,则称这个数是“完全平方数”.试找出a1,a2,…,an,…这一列数中从小到大排列的前4个完全平方数,并指出当n满足什么条件时,an为完全平方数(不必说明理由).

题型:单项选择题

读云南某城市的区位图(甲图)和该城市某局部地区8:30时噪声等值线分布示意图(乙图),回答1~2题。  

1.据图分析甲城市形成的区位因素可能是[ ]

A.水运障碍

B.地形

C.气候

D.水源

2.乙图中n地的噪声污染值和污染来源是[ ]

A.小于100分贝,奶牛场

B.大于120分贝,车站或码头

C.小于80分贝,超市

D.大于60分贝,学校及其体育场

题型:单项选择题

十灰散主治病证的病机是

A.脾气不足,脾不统血

B.血热妄行,损伤血络

C.肝火犯肺,损伤血络

D.脾气不足,冲脉不固

题型:单项选择题

在DCS中、现有的局部网络形式主要有()。

A、星型

B、星型、三角形

C、环型、总线型

D、三角形、总线型

题型:单项选择题

Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people need at least some acquaintance with its structure and operation. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist.
This book is written for the intelligent student or lay person whose acquaintance with science is superficial, for the person who has been presented with science as a musty storehouse of dried facts, for the person who sees the chief objective of science as the production of gadgets, and for the person who views the scientists as some sort of magician. The book can be used to supplement a course in any science, to accompany any course that attempts to give an understanding of the modern work, or--independently of any course --simply to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is, who scientists are, and what they do. It will give them an awareness and understanding of the relationship between science and our culture and an appreciation of the roles science may play in our culture. In addition, readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are pervasive in our culture.
We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populate it. That population has in recent years come to comprise more and more women. This increasing role of women in the scientific subculture is not a unique incident but, rather, part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contributions. In discussing these changes and contribution, however, we are faced with a language that is implicitly sexist, one that uses male nouns or pronouns in referring to unspecified individuals. To offset this built-in bias, we have adopted the policy of using plural nouns and pronouns whenever possible and, when absolutely necessary, alternating he and she. This policy is far from being ideal, but it is at least an acknowledgment of the inadequacy of our language in treating half of the human race equally.
We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as do many other scientists, that we shouldn’t take ourselves too seriously. As the reader may observe, we see science as a delightful pastime rather than as a grim and dreary way to earn a living.

We need to know something about the structure and operation of science because ______.

A. it is not easy to understand the things that excite and frustrate the scientist
B. Science affects almost every aspect of our life
C. Scientists live in a specific subculture
D. It is easier to understand general characteristics of science

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