为窗体或报表上的控件设置属性值的宏命令是( )。A．Echo B．MsgBox C

地下连续墙的施工工艺不包括（）

A.导墙墙工

B.槽底消淤

C.吊放钢筋笼

D.拔出型钢

阅读理解。

     The name "cowboy" conjures up many different images from movies, songs and TV. These imagined

cowboys range from white-hat-wearing heroes to gun-shooting hooligans(流氓).But, cowboys are

actually real people from US history?

     When the US Civil War ended, many soldiers had no place to call home. So, they began to drift to

the country's rural West. Ranchers(农场主) hired these men to take care of the cattle and work around

the ranch. When the ranch owner wanted to sell the cattle, the cowboys would round up the herd from

the open prairie(牧场) and drive the cattle miles to the market.?

     With the invention of barbed wire(铁丝网),the cowboy era(1865-1890) began to come to an end.

But people in the East had always been curious about their lifestyle. Many country/western songs during

this time tried to capture the true cowboy spirit. Newspapers published cowboy tales in serial form and

adventure novels followed. The bigger the fiction,  the better the sales. These novels often portrayed

cowboys as cruel and violent men. Cowboys carried the bad reputation for many years afterwards.

     When movies began to be popular in the 1920s, the cowboy image changed again. Now, a cowboy

became the great white knight(骑士) that loved his horse more than the beautiful ladies he rescued. As

the cowboy of the "Old West" spent more time with his horse than the ladies, this era's image was not

entirely false.

     Then, in the 50s,Hollywood began producing so-called "spaghetti westerns(意大利西部片)".They

earned the nickname because Italian companies financed the films and TV shows. This started the

decade's "Cowboy Craze". While this didn't last long, it made modern country / western music, fashion

and dance extremely popular.?

     In recent years, with the help of musicians, radio stations and bars, cowboy nostalgia(怀旧情绪) has

returned. Even though his image is still changing - somewhere between ballad singing country boy and

bar room fighter - there's one thing for sure, you can't keep the cowboy down..

1. The purpose of this story is to ______.

A. introduce cowboy movies and novels?

B. introduce various productions associated with cowboys?

C. show the cowboy's everlasting charm?

D. inform us about the cowboy's spirit?

2. Before they became cowboys, they ______.

A. served in the army          

B. worked as bar-room fighters?

C. owned ranches              

D. were adventurous explorers?

3. During "the cowboy era" mentioned in the story, _______.?

A. the cowboy often came to the rescue of ladies in newspaper tales?

B. the distant Wild West appealed to people in the East?

C. cowboys were shown as cruel and violent men on the silver screen?

D. country music started the cowboy craze which swept the whole country

4. By saying "you can't keep the cowboy down", the writer means that ______.

A. cowboys are real people in history      

B. cowboys still fascinate people?

C. you can't make cowboys unhappy  

D. you can't grasp the cowboy spirit

5. Which of the following statements would the writer agree to?

A. The cowboy has been presented in different lights in different eras.?

B. Cowboys are gun-shooting hooligans, without doubt.?

C. Cowboys have always been a passing phenomenon.?

D. Cowboys enjoy Italian foods, for example, spaghetti.

多年来，在中央政府的领导下，在全国各地的支持下，经过民族地区各族人民的艰苦努力和团结奋斗，民族地区经济社会发展取得了巨大成就，人民生活水平显著提高。加快民族地区经济社会的发展是    [ ]

A．实行民族区域自治的政治保证    

B．巩固民族团结的物质保障    

C．实现民族平等的前提条件        

D．实现民族团结的政治基础

压电式传感器的输出须先经过前置放大器处理，此放大电路有电荷放大器和（）两种形式。

属于选择性β受体拮抗剂，可以治疗高血压、心绞痛的是（）

A.盐酸普萘洛尔

B.盐酸可乐定

C.盐酸多巴胺

D.阿替洛尔

E.盐酸麻黄碱