声音在15℃空气中的传播速度是______m/s．一根足够长且裸露在地面的铁制直

实现中 * * 伟大复兴，就是中 * * 近代以来最伟大的梦想。民族独立、政治民主、祖国统一等是实现民族复兴的历史任务。请回答:

(1)皇帝倒了，辫子剪了，这是1912年给中国人最大的感受。辛亥革命实现了20世纪中国的第一次历史性巨变，促进了中国的政治近代化。请列举具体史实予以说明。(2分)

(2)抗日战争是近代以来中国反侵略战争取得的第一次胜利，而全国人民团结一致是争取

抗日战争胜利的基本条件。在重庆，卢作孚创办的什么公司为抗战做出了重要贡献?

请概述该公司保证抗战运输的史实。(2分)

(3)下图是香港、澳门回归时的精彩场面。它们的回归是中 * * 洗雪历史耻辱、实现民族复兴的百年盛事。根据所学知识，分析其主要原因。(2分)

阅读理解。

     Laptop computers are popular all over the world. People use them on trains and airplanes, in airports and

hotels. These laptops connect people to their workplace. In the United States today, laptops also connect

students to their classrooms.

     Westlake College in Virginia will start a laptop computer program that allows students to do schoolwork

anywhere they want. Within five years, each of the 1500 students at the college will receive a laptop. The

laptops are part of a ＄10 million computer program at Westlake, a 110-year-old college. The students with

laptops will also have access to the Internet. In addition, they will be able to use e-mail to "speak" with their

teachers, their classmates, and their families. However, the most important part of the laptop program is that

students will be able to use computers without going to computer labs. They can work with it at home, in a

fast-food restaurant or under the trees-anywhere at all!

     Because of the many changes in computer technology, laptop use in higher education, such as colleges

and universities, is workable. As laptops become more powerful, they become more similar to desktop

computers. In addition, the portable computers can connect students to not only the Internet, but also libraries

and other resources. State higher-education officials are studying how laptops can help students. State

officials are also testing laptop programs at other universities, too.

     At Westlake College, more than 60 percent of the staff use computers. The laptops will allow all teachers

to use computers in their lessons. As one Westlake teacher said, "Here we are in the middle of Virginia and

we're giving students a window on the world.They can see everything and do everything."

1. The main purpose of the laptop program is to give each student a laptop to _____.

A. use for their schoolwork

B. access the Internet

C. work at home

D. connect them to libraries

2. Why is the word "speak" in the second paragraph in quotation marks (引号)?

A. They don't really talk.

B. They use the computer language.

C. Laptops have speakers.

D. None of the above reasons is correct.

3. Which of the following is true about Westlake College?

A. All teachers use computers.

B. 1500 students have laptops.

C. It is an old college in America.

D. Students there can do everything.

4. A window on the world in the last paragraph means that students can _____.

A. attend lectures on information technology

B. travel around the world

C. get information from around the world

D. have free laptops

5. What can we infer (推断)from the passage?

A. The program is successful

B. The program is not workable.

C. The program is too expensive.

D. We don't know the result yet.

监理规划与监理实施细则

某实施监理的建设项目，开工前由设计单位负责人主持召开了设计交底会，建设单位、监理单位、施工单位相关人员参加。会后，施工单位整理形成了设计交底会议纪要，送设计单位相关责任人签字后作为施工和监理的依据。

工程开工后，建设单位主持召开了第一次工地会议，建设单位、施工单位和监理单位分别介绍了各自的驻场机构、人员及分工，建设单位对项目监理机构进行了授权，施工单位介绍了施工准备情况，项目监理机构将监理规划的编制进展及主要内容作了介绍，会议确定了参加工地例会的主要人员以及召开工地例会的周期、地点及主要议题，并要求施工单位完成会议纪要的整理。

说明监理规划的编制及报批流程。

安全标志的设置要求是什么？

156.800MHZ的保护频带为（）.

A、156.7825

B、156.8375

C、156.7625---156.8375

D、156.7975---156.8025