急性咽扁桃体炎最多见的病原体为（） A.肺炎链球菌 B.葡萄球菌 C.流感嗜血杆菌

阅读材料，回答问题

材料一 “…… * * 党部队的占领台湾，将直接威胁太平洋地区的安全，及在该地区执行合法而必要职务的美国部队。因此，我已命令第七舰队阻止对台湾的任何攻击”。

——美国总统杜鲁门1950年6月27日讲话

材料二 “中国人民决不能容忍外国的侵略，也不能听任帝国主义对自己的邻人肆行侵略而置之不理”。

——1950年周恩来讲话

材料三 “新中国成立后就确立了处理中印两国关系的原则，那就是相互尊重领土主权、互不侵犯、互不干涉内政、平等互惠和和平共处的原则”。

——1953年12月31日周恩来会见印度代表团时的讲话

材料四

请回答:

（1）依据材料一、二，概括指出新中国成立后，美国对华实行敌对政策的两例具体史实。

（2）材料三的内容被总称为                   原则 ，在国际上产生深远影响。

（3）指出材料四三幅图片反映的历史事件，据此概括中美关系发展历程。

(4)综上所述，你认为未来中美两国关系怎样才能健康稳定的发展？

根据了解被审计单位及其环境评估的重大错报风险，确定的进一步审计程序，仅仅是指控制测试、( )

事故树法能实现以下哪些功能（）

A.识别导致事故的设备故障

B.评估事故的后果严重程度

C.识别导致事故的人失误

D.为管理措施改进提供科学依据

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.

According to the passage, the author implies that people don’t have to buy information on Net because（）

A. it’s always free to download information from websites

B. most writers offer free copies on Net

C. publishing companies offer free copies on Net

D. anybody can e-mail downloaded copies

大多数人注射乙肝疫苗（抗原）后，引起体内产生（）

A.相应抗体

B.生长激素

C.记忆B细胞

D.乙肝病毒