在吸毒的三级预防措施中，下列哪种不属于一级预防（） A.电视教育 B.街道宣教 C.

新修订的老年法草案将在“精神慰藉”一章中规定“家庭成员不得在精神上忽视、孤立老人”，强调“与老年人分开居住的赡养人，要经常看望或者问候老人”。“常回家看看”拟写入法律。下面说法正确的是（   ）

A．孝敬父母是中 * * 的传统美德，因此必须写入法律。

B．“常回家看看”是道德规范，随着时代发展才有必要写入法律的

C．孝敬父母只是道德要求，不是公民的法定义务

D．孝敬父母不仅要在物质上给予帮助，更要在精神上给予慰藉

患者女，43岁，因“双下肢感觉减退，呈袜子样分布2年”来诊。既往有糖尿病病史10年。诊断：多发性神经病。

该患者首选的治疗是（）

A.抗感染

B.激素治疗

C.控制糖尿病

D.禁酒

E.戒烟

Nineteenth-century writers in the United States, whether they wrote novels, short stories, poems or plays, were powerfully drawn to the railroad in its golden years. In fact, writers responded to the railroads as soon as the first were built in the 1830’s. By the 1850’s, the railroad was a major presence in the life of the nation. Writers such as Ralph Waldo Emerson and Henry David saw the railroad both as a boon(要求) to democracy(民主国家) and as an object of suspicion. The railroad could be and was a despoiler(掠夺者) of nature, furthermore, in its manifestation of speed and noise. It might be a despoiler of human nature as well. By the 1850’s and 1860’s, there was a great distrust among writer and intellectuals of the rapid industrialization of which the railroad was a leading force. Deeply philosophical historians such as Henry Adams lamented the role that the new frenzy for business was playing in eroding traditional values. A distrust of industry and business continued among writers throughout the rest of the nineteenth century and into the twentieth.

　 For the most part, the literature in which the railroad plays and important role belong to popular culture rather than to the realm of serious art. One thinks of melodramas, boys’ books, thrillers, romances, and the like rather than novels of the first rank. In the railroads’ prime years, between 1890 and 1920, there were a few individuals in the United States, most of them with solid railroading experience behind them, who made a profession of writing about railroading—works offering the ambience of stations, yards, and locomotive cabs. These writers, who can genuinely be said to have created a genre, the “railroad novel”, are now mostly forgotten, their names having faded from memory. But anyone who takes the time to consult their fertile writings will still find a treasure trove of information about the place of the railroad in the life of the United States.

小题1:The underlined word “it” in the passage refers to______.

A．railroad

B．manifestation

C．speed

D．nature小题2:In the first paragraph, the author implies that writers’ reactions to the development of railroads were______.

A．highly enthusiastic

B．both positive and negative　

C．unchanging

D．Disinterested小题3: According to the passage, the railroad played a significant role in literature in all of the following kinds of books except_______.　

A．thrillers

B．boys’ books

C．romances

D．important novels小题4: The phrase “first rank” in the second paragraph is closest in meaning to______.

A．largest category(类别)

B．highest quality　

C．earliest writers

D．most difficult language小题5: Which of the following topics is the main idea of passage?

A．The role of the railroad in the economy of the USA　

B．Major nineteenth century writers

C．The conflict between expanding industry and preserving nature

D．The railroad as a subject for literature

文艺复兴时期百花怒放的原因是精神方面的一个总倾向，普及于民族各阶层的一种奇妙的才能。艺术是影子，（）是本体，艺术始终跟着（）的诞生，长成，衰落，方向。

A.天才

B.才能

C.现实

D.宗教

对于一阶环节的放大系数K，下面叙述正确的是（）。

A、是输出信号与输入信号的比值

B、是动态参数

C、若输入信号X（t）是幅值为A的阶跃扰动信号，则K=Y（∞）/A

D、若输入信号X（t）是幅值为A的阶跃扰动信号，则K=Y（0）/A