火灾扑灭后，未经公安机关消防机构同意（）A、可以适当清理火灾现场 B、任何单位、个人不

（13分）下表是元素周期表的一部分，回答下列问题：

（1）写出①、②两种元素的符号      、     

（2）写出⑦、⑩两种元素的名称      、     

（3）在这些元素中，    （用元素符号填写，下同）是最活泼的金属元素；    是最活泼的非金属元素；    是最不活泼的元素

（4）这些元素的最高价氧化物的对应水化物中       （用化学式填写）酸性最强；       （用化学式填写）碱性最强；能形成两性氢氧化物的元素是    （用元素符号填写）

（5）从③到⑨的元素中，    （用元素符号填写）原子半径最小

（6）比较④和⑤的化学性质    （用元素符号填写）更活泼，可用            试剂验证。

下列各句中，加粗成语使用恰当的一句是[ ]

A．本一本二志愿正在填报中，很多文科考生为选专业大伤脑筋。记者发现，2008年文科考生占考生总数半壁江山，而从江苏公办院校招生计划来看，文科专业计划只有1/3。

B．奥运会开幕式上五彩斑斓、光彩夺目的焰火点亮了雄伟的“鸟巢”，扮靓了深邃的夜空；美轮美奂、如诗如画的文艺表演使人心醉、令人着迷，精彩的北京奥运正在上演。

C．博尔特在男子百米预赛中状态奇佳，闲庭信步般地跑出了9秒92的佳绩，在18日的百米飞人大赛上更是创造了9秒69的世界记录。

D．连日来，精彩的奥运赛场捷报频传。中国运动员不孚众望，不仅在传统优势项目上争金夺银，勇破世界纪录，而且在一些久违的项目上也实现了历史性突破。

证券公司应通过部门设置、人员管理、信息管理等方面的隔离措施，建立健全研究咨询部门与投资银行、自营等部门之间的隔离墙制度。( )

在WindowsXP中，运行磁盘碎片整理程序可以（）。

A.增加磁盘的存储空间

B.找回丢失的文件碎片

C.加快文件的读写速度

D.整理破碎的磁盘片

People don’t want to buy information online. Why Because they don’t have to. No more than that because they’re used to not paying for it. That’s the conventional wisdom. Slate, Microsoft’s online politics-and-culture magazine, is an oft-cited example of the failed attempts to charge a fee for access to content. So far, for most publishers, it hasn’t worked.

But nothing on the Web is a done deal. In September graphics-soft-ware powerhouse Adobe announced new applications that integrate commerce into downloading books and articles online, with Simon & Schuster, Barnes and Noble, and Salon. corn among its high-profile partners. Some analysts put the market for digitized publishing at more than $100 billion. Of course, if the Internet can generate that kind of money—some might say almost any kind of money—people want in. And this couldn’t come at a better time. Newspaper and magazine writers in particular are increasingly frustrated by their publishers, which post their writings online but frequently don’t pay them extra.

So here’s the good news: Fathrain. com, the third biggest book-seller on the Net—after Amazon. com and Barnesandnoble. corn—is now doing just what the publishing industry that made it a success fears., it’s offering a secure way to pay for downloadable manuscripts online. Fatbrain calls it offshoot eMatter. With it, the company’s executives have the radical notion of ousting publishers from the book-selling business altogether by giving writers 50% of each and every sale (To reel in authors, eMatter is running a 100% royalty promotion until the end of the year. ) Suggested prices to consumers range from a minimum $ 2 to $ 20, depending on the size of the book to download.

"This will change publishing forever!" Chris MaeAskill, co-founder and chief executive of Fatbrain, declares with the bravado of an interior decorator. "With eBay, anybody could sell antiques. Now anybody can be published. "

There’s been no shortage of authors wanting in. Within a few weeks, according to the company, some 2,000 writers signed on to publish their works. Some of this is technical stuff—Fatbrain got where it is by specializing in technical books—but there are some well-known writers like Catherine Lanigan, author of Romancing the Stone, who has put her out-of-print books and a new novella on the site. Another popular draw is Richard Bach, who agreed to post a 23-page short story to the site.

Not everyone thinks downloadable documents are the biggest thing in publishing since Oprah’s Book Club. "I think it will appeal to sellers more than buyers," says Michael May, a digitalcommerce analyst at Jupiter Communications, which released a report that cast doubt on the market’s potential. "A lot of people are going to publish gibberish. The challenge is to ensure the quality of the work. "

Blaine Mathieu, an analyst at Gartner Group’s Dataquest, says, "Most people who want digital content want it immediately, I don’t know if this model would satisfy their immediate need. Even authors may not find that Web distribution of their works is going to bring them a pot of gold. For one thing, it could undermine sales rather than enhance them. For another, anybody could e-mail downloaded copies of manuscripts around town or around the world over the Net without the writer’s ever seeing a proverbial dime. " Softlock. com, Authentica and Fatbrain are trying to head this problem off by developing encryption padlocks that would allow only one hard drive to receive and print the manuscripts. For now, the problem persists.

Which of the following can serve as an appropriate title for the passage ？（）

A.Who’s in E-commerce

B.Mind over eMatter

C.Sharing Brains on Net

D.E-publishing and Traditional Publishers