通信检修、新系统接入工作，通信调度值班员应核实哪些问题？

阅读理解。

     When I met him, I had a lot of anger inside of me. I've lived my whole life in Spainish Harlen, but in my

neighborhood, there are shoot-ups all the time. I know kids who have been shot or beaten up. I have friends

who ended up in prison. I could have ended up that way too, but Mr. Clark wouldn't let that happen.

     Mr. Clark worked long hours, making sure I did my work. My grades rose. In fact, the scores of our

whole class rose. One day, he took our class to see The Phantom of the Opera, and it was the first time some

kids had ever been out of Harlem. Before the show, he treated us to dinner at a restaurant and taught us not to

talk with our mouths full. We did not want to let him down.

     Mr. Clark was selected as Disney's 2000 Teacher of the Year. He said he would draw three names out of

a hat; those students would go with him to Los Angeles to get the award. But when the time came to draw

names, Mr. Clark said, "You are all going."

     On graduation day, there were a lot of tears. We didn't want his class to end. In 2001, he moved to Atlanta,

but he always kept in touch. He started giving lectures about education, and wrote a best-selling book based

on his classroom rules, the Essential 55.

     In 2003, Mr. Clark took some of us on a trip to South Africa to deliver school supplies and visit orphanages

(孤儿院). It was the most amazing experience of my life. It's now my dream to one day start a group of

women's clubs, helping people from all backgrounds.

1. Without Mr. Clark, the writer _____. [ ]

A. might have been put into prison

B. might not have won the prize

C. might have joined women's club

D. might not have moved to Atlanta

2. The Essential 55 is _____. [ ]

A. a show

B. a speech

C. a classroom rule

D. a book

3. How many students' names were finally drawn out of a hat by Mr. Clark? [ ]

A. None

B. Three

C. Fifty-five

D. All

4. In the passage, the writer intends to tell us that _____. [ ]

A. Mr., Clark went to South Africa because he liked travelling

B. Mr. Clark helped to set up a group of women's clubs

C. a good teacher can help raise his or her students' scores

D. a good teacher has a good influence on his or her students

（24分）发展经济，关注民生，与社会进步息息相关。阅读材料，并结合所学知识，回答问题：

材料一  以下是反映20世纪30年代美国经济危机时的两幅图片

（1）据材料一，指出经济危机发生后美国社会保障民生的具体做法（4分）。

材料二   第二次世界大战后，资本主义国家继续强化国家对经济的干预，国家垄断资本主义进一步发展。但是在新的历史条件下，当代资本主义的发展产生了许多新变化，呈现出许多新特点。

——人教版必修二《历史》第六单元引言

（2）请列举第二次世界大战后资本主义经济发展出现的新变化。（10分）

材料三  由于粮食和日用品产量有限，我国曾经对粮食、食油、布料等实行凭票供应。改革开放后，随着粮食产量的提高，工农业产品的增加，供应紧张的局面逐步得到改善，政府取消了实行几十年的票证供应。当年的粮、油、布票证，如今成了收藏家的藏品。现在，人们再也没有花钱而买不到东西的烦恼了。   

——人教版必修二《历史》第66页

（3）你认为，导致当今中国产品丰富的主要因素是什么？（4分）

（4）根据上述经济政策的调整，你可以得出什么启示? （6分）

程控调度电话总机选叫信号的编码“1”码频率应是（）Hz。

A.1650

B.2100

C.1300

D.910

《矿山安全法》规定，矿山企业必须对作业场所中的( )进行检测，保证符合安全要求。

A．有毒有害物质

B．井下空气含氧量

C．有毒有害物质和井下空气含氧量

D．井下空气含氮量