阅读下列材料 材料一如图,我们以这些殖民地的善良人民的名义和权力宣布:这些联合殖

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问题:

阅读下列材料            

材料一 如图,我们以这些殖民地的善良人民的名义和权力宣布:这些联合殖民地从此成为、而且名正言顺地应当成为自由独立的合众国;它们解除对于英王的一切隶属关系,而它们与大不列颠王国之间的一切政治联系也应从此完全废止。

材料二 一幢裂开的房子是站不住的.我相信这个政府不能永远维持半奴隶和半自由的状态。我不期待联邦解散,我不期待房子坍塌,但我的确希望它停止分裂。

——1858年6月林肯的演讲《裂开了的房子》

请回答:

(1)材料一的内容出自什么文献?该文献的公布具有怎样的历史意义?

(2)依据材料二并结合所学知识,指出林肯当选美国总统后,首要完成的任务是什么?又是怎样解决的?

(3)依据上述材料,你认为美国之所以成为当今世界上最发达的资本主义国家的基本前提是什么?

考点:来克星顿枪声英属北美殖民地的发展《独立宣言》的发表美国独立战争
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We are all busy talking about and using the internet. But how many of us know the history of the internet?

Many people are surprised when they find that the internet was set up in the 1960’. At that time, computers were large and expensive. Computer networks didn’t work well if one computer in the network broke down. Then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If one part of the network was not working , information could be sent through another part. In this way computer network system could keep on working all the time.

At first the internet was only used it, too. However, computers were still very expensive and the internet was difficult to use. By the start of the 1990’s, computers were still very expensive and the internet was difficult to use. By the start of the 1990’s, computers had become cheaper and easier to use. Scientists had also developed software that made “surfing “ the internet more convenient.

Today it is easy to get online and it is said that millions of people use the internet every day. Sending e-mail is more and more popular among students. The internet has now become one of the most important parts of people’s life.

小题1:The Internet has a history of more than        years.

A.ten

B.twenty

C.forty

D.sixty小题2:A new network system was set up to        .

A.make computers cheaper

B.make computers expensive

C.make itself keep on working all the time

D.make computers large小题3:At first the Internet was only used by        .

A.the government

B.universities

C.hospitals

D.schools小题4:What does “convenient” mean in the passage?

A.便宜的

B.昂贵的

C.方便的

D.困难的小题5:Today        than before.

A.fewer people are using computers

B.it is more difficult to get online

C.sending e-mail is more popular

D.computers are more expensive

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81的平方根是        

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在数控车床加工过程中,零件长度为50mm,割刀宽度为2mm,如以割刀的左刀尖为刀位点,则编程时Z方向应定位在()处割断工件。

A、50mm

B、52mm

C、48mm

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全身性瘙痒症一般有()()等两种

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要判断肺结核有无传染性。以下最可靠的依据是

A.PPD试验呈阳性反应
B.痰中找到结核杆菌
C.X线胸片可见钙化点和空洞
D.血沉增快
E.有发热、乏力等结核中毒症状

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