若有 char x=32，y=3 则表达试~x&y的值为 [7] 。

美国经济复苏乏力、失业率居高不下以及国会中期选举的政治压力下贸易保护主义行动进一步升温，但美方的贸易保护主义将损害中美经贸关系发展，影响世界经济复苏。这启示我们 （   ）

①既要重视局部，又要统筹全局 ②既要把握适度原则，又要重视量的积累

③既要正确把握矛盾的斗争性，又要正确把握矛盾的同一性    

④既要看到事物发展的方向是前进的，又要看到道路是曲折的

A．①③

B．②④

C．①②

D．②③

三十五岁男性，因发热及口腔黏膜糜烂前来就诊，患者自述有不洁性交史。查体：T37．8℃，全身淋巴结肿大，咽部黏膜糜烂，唇黏膜可见多个0．5cm左右灰白色斑块。梅毒血清试验强阳性

以下说法错误的是（）

A.可分为后天梅毒和胎传梅毒

B.后天梅毒主要通过性接触传染

C.一期梅毒的主要症状为硬下疳

D.三期梅毒的口腔黏膜损害主要是三期梅毒舌炎和树胶肿

E.哈坎森牙是二期梅毒的标志性损害

传染病流行过程的定义是（）

A.各种传染源不断向外界排出病原体

B.病原体侵袭易感者

C.病原体在中间宿主中的传代

D.病原体通过一定的传播途径，不断更迭其宿主的过程

E.病原体在宿主体内生长、繁殖的过程

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One thing that Ismael Matos, 23, says he’s learned on his job as a special agent with the Geek Squad, is that there are no stupid questions—not even when a customer asks where the power button is. The goal, Matos says, is first to "strip out the jargon. " You know what he means: those terms like gigs, Ram, and motherboard that civilians don’t typically use in everyday conversations. Once he establishes a common language with the customer, Matos can focus on building a relationshipone that he hopes will pay off in the future. Matos knows that clients often don’t have the same skills he does. His customers ask for help not only with setting up new computers and installing software, but also with digital cameras, wireless Internet access and even getting their iPod synced with iTunes.

We live in the age of Web2.0, when Internet viewers are fast becoming content creators. We may log in to social networking sites such as Digg and Technorati, rate or even upload videos on YouTube, and contribute and edit information on collaborate websites known as wikis.

But members of this expanding plugged-in population aren’t necessarily up to speed with the language of the web—or understand the technical lingo of the sales or customer service people they’re turning to for assistance. According to a "Cyber Stress" survey of 1,001 American broadband Internet service users, 46 percent said the typical tech support person uses an excess of technical language, and 61 percent said they would prefer a "computer therapist" who is compassionate and easy to talk to.

A question that online public relations strategist Sally Falkow says she’s hearing often these days is, "How do we cope with all this" she tells people, "There’s no way you can escape this. There’s a big conversation going on," and it’s important to learn how to be part of it.

If you’re at the earliest stage of the learning curve, start by reading technology-oriented columns and articles in magazines, newspapers and websites that are written for a general audience. Move up to more tech-oriented e-letters as you build a foundation. As you come across new tells, look them up online. Definitions at Wikipedia, the online encyclopedia written and edited by web users, may be helpful. You should also start associating with people who can help explain things. Look for groups that sponsor seminars or find a supportive online community. Don’t be afraid to guide your helper. Explain what you need to know, ask him or her to slow down and speak in basic terms.

What is the main characteristic of Web2.0 according to the passage（）

A. It contains multi-media resources

B. It is more like a social networking

C. The views can make their own contributions to the content

D. The internet connection is faster than before