“佛跳墙”是哪一菜系的代表作？（） A.川菜 B.湘菜 C.徽菜 D.闽菜

胸交感神经节阻滞术的适应证是（）

A.上肢雷诺病

B.胸壁疱疹后神经痛

C.糖尿病性下肢末梢神经炎

D.腹腔血管痉挛性疼痛

E.脑供血不足

阅读下面这首诗歌，完成后面题目。(6分)

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【清】纳兰性德①

微云一抹遥峰，冷溶溶，恰与个人清晓画眉同。红蜡泪，青鲮被，水沉②浓，却与黄茅野店听西风。

(选自《饮水词》)

【注】①纳兰性德(1655--1685)，清代满族词人。康熙帝器重的藏身近臣，但他无心功名利禄，却对早亡的妻子难于忘怀。此篇作于出使途中。②水沉：即水沉香，沉香所制成的香。这里指香气。

小题1:“微云”这一意象有什么妙用?请简要赏析。(3分)

小题2:词中，作者运用了虚实结合的手法来表达感情。请简要赏析。（3分)

如图所示，小车板面上的物体质量为m＝8kg，它被一根水平方向上拉伸了的弹簧拉住而静止在小车上，这时弹簧的弹力为6N．现沿水平向右的方向对小车施以作用力，使小车由静止开始运动起来，运动中加速度由零逐渐增大到1m/s²，随即以1m/s²的加速度做匀加速直线运动．以下说法正确的是(    )

A．物体受到的摩擦力一直减小

B．物体与小车始终保持相对静止，弹簧对物体的作用力始终没有发生变化

C．当小车加速度(向右)为0.75m/s²时，物体不受摩擦力作用

D．小车以1m/s²的加速度向右做匀加速直线运动时，物体受到的摩擦力为8N

铁塔主要用于110kV及以下的架空输电线路。

The sudden, dramatic explosion in value of online social media sites like Facebook and Twitter is reminiscent of the rise, about 15 years ago, of the online businesses that created the "dotcom bubble. " The Internet was far less widely used than it is today. Still, visionaries saw the potential for the Internet we have today, so virtual companies sprung up and grew like weeds as investors threw money their way. Some, like Google and Amazon, developed an enduring online presence and lasting financial value. But far too many quickly lost value when it became apparent that their rapid growth wasn’t yielding revenue.

So, how much is Facebook’s network of users really worth The potential is clear—when so many people are gathered in one virtual place, offering so much personal information about themselves, they create an unprecedented platform for targeted advertising. Or they would, if they were on the network to shop. When eBay and Amazon suggest products to their customers, they’re talking to people who’ve already proven that they’re interested in buying similar products. People go on Facebook for a variety of reasons-to catch up with old friends, share pictures, make new acquaintances, and talk, sometimes endlessly, about themselves. Whether they’ll appreciate having their virtual conversations interrupted by advertising, targeted or not, remains unclear.

It’s also unclear whether Facebook will actually be able to share information about its users’ browsing habits with advertisers. Complaints about the ineffectiveness of Facebook’s privacy policies have arisen in multiple countries, part of a larger social concern about how private information gets used on line. In December, the Federal Trade Commission issued a proposed framework that, among other things, would permit Facebook users to block advertisers from accessing information about their online interests. If that framework is implemented and widely used by Facebook subscribers, it could seriously impair the site’s value as a potential platform for targeted marketing.

What is clear is that Goldman Sachs has a significant interest in Facebook’s financial value, at least for the short term. Goldman Sachs’ decision to invest heavily in Facebook has had some interesting impacts. For one thing, the investment has allowed Facebook an opportunity to postpone issuing an IPO. That means that, at least for the moment, Facebook doesn’t yet have to disclose its finances or publicly address investor complaints.

Goldman Sachs’ investment also puts the firm in an ideal position to handle Facebook’s IPO when it eventually is issued, perhaps sometime next year. That, of course, has the potential to generate substantial revenues for Goldman Sachs’ clients. Google’s 2004 IPO raised an initial $1.2 billion for the company. After all the propaganda, Facebook’s IPO can hardly be expected to raise less. However, there remains a significant question as to whether Facebook’s potential for generating income is more virtual than real. If it turns out that Facebook can’t live up to its potential for generating advertising revenue, venture capitalists who invest for the long term may get burned.

Companies like Amazon and Facebook earn their money by（）

A. luring more visitors to their sites

B. providing easily accessible services

C. attracting advertisements

D. offering a platform for free conversations