清热燥湿治湿热黄疸宜选 A．黄连 B．苦参 C．龙胆草 D．黄柏 E．黄芩

近年来，我国的个人所得税起征点不断调高，由800元调到1600元．之后又调到2000元．还有上调的趋势。这有利于增加人民群众的实际收入，从而增加人民群众的消费支出。这主要说明

A．生产决定消费．消费反作用于生产

B．经济越发展，税收越应当减少

C．税收越少，越有利于提高居民的生活水平

D．收入水平是影响消费的主要因素

自然灾害灾情的大小通常以人类社会和自然资源的损失为衡量标准，如人员伤亡、财产损失与环境破坏等。据此完成1~3题。

1、自然灾害造成的最严重的后果是[ ]

A、对人类生理、心理的损害

B、财产损失

C、自然资源与环境破坏

D、停工停产、交通通信中断

2、某一自然灾害的灾情指标有受灾面积、成灾面积、绝收面积、减产面积、经济损失等。该自然灾害可 能是①干旱②洪涝③地震④风暴潮 [ ]

A、①②

B、③④

C、①③

D、②④

3、不同的自然灾害各有其一定的受灾者，下列叙述正确的是 [ ]

A、干旱的主要受灾对象为农作物及农田

B、地震的主要受灾对象为农作物及农田

C、风暴潮的主要逐灾对象是工程建筑

D、洪水的主要受灾对象是工程建筑

The economy may be troubled, but one area is thriving: social media. They begin with Facebook and extend through a dizzying array of companies that barely existed five years ago: Twitter, LinkedIn, Groupon, Yammer, Yelp, Flickr, Ning, Digg--and the list goes on. These companies are mostly private but have attracted the ardent attention of Wall Street and investors, with Facebook now worth a purported $ 75 billion and Groupon valued at close to $ 25 billion.
There can be little doubt that these companies enrich their founders as well as some investors. But do they add anything to overall economic activity While jobs in social media are growing fast, there were only about 21,000 listings last spring, a tiny fraction of the 150 million-member U. S. workforce. So do social-media tools enhance productivity or help us bridge the wealth divide Or are they simply social--entertaining and diverting us but a wash when it comes to national economic health
The answers are vital, because billions of dollars in investment capital are being spent on these ventures, and if we are to have a productive future economy, that capital needs to grow the economic pie~and not just among the elite of Silicon Valley and Wall Street. The U. S. retains a competitive advantage because of its ability to innovate, but if that innovation creates services that don’t turn into jobs, growth and prosperity, then it does us only marginal good.
The problem is that these tools are so new that it is extremely difficult to answer the questions definitively. As I was about to write this column, I overheard a ceil-phone conversation at an airport with this snippet.- "The company says they are using social media, but who knows if it is making any difference" Flash back nearly 20 years and the same question was being asked about the first Internet wave. Were Netscape and the Web enhancing our economy, or were people just spending more time at work checking out ESPN. com Official statistics weren’t designed to capture the benefits, and didn’t--until statistics mavens at the Federal Reserve, urged on by Alan Greenspan, refined the way they measured productivity. As a result of these somewhat controversial innovations, the late 1990s became a period of substantial technology-driven gains.
It is possible that the same gap exists today, that social-media tools are indeed laying the groundwork for new industries and jobs but aren’t yet registering on the statistical radar. Many companies believe social media make them more competitive. Ford and Zappos, for instance, use Twitter to market their products and address consumer complaints. Countless corporations have created internal Face-book pages and Yammer accounts for employees to communicate across divisions and regions. Industry groups for engineers, doctors and human-resources professionals have done the same to share new ideas and solutions on a constant basis rather than episodically at conferences. Staffing companies have been especially keen on social media; a senior executive at Manpower told me we should think of social-media tools as today’s version of the telephone. Yes, they are used for frivolity and all sorts of noneconomic activity (chatting with friends, passing the time), but they also help communication happen more efficiently.
One big question is what proportion of that benefit will be captured economically by consumers vs. corporations. Sure, social media allow people to compare prices and quality and assess which companies are good to work for and where jobs might be. They also may enhance education and idea sharing, but the caveat is that the people who use these tools are the ones with higher education and income to spend on technology, not the tens of millions whose position in today’s world has eroded so sharply. According to a recent Pew Foundation study, only 45% of adults making less than $ 30,000 have access to broadband, which is an essential component of using content-rich social media effectively.
And that is the tub. Like so many things these days, social media contribute to economic bifurcation. Dynamic companies are benefiting from these tools, even if the gains are tough to nail down in specific figures. Many individuals are benefiting too, using LinkedIn to find jobs and Groupon to find deals. But for now, the irony is that social media widen the social divide, making it even harder for the have-nots to navigate. They allow those with jobs to do them more effectively and companies that are profiting to profit more. But so far, they have done little to aid those who are being left behind. They are, in short, business as usual.

In the sentence "Like so many things these days, social media contribute to economic bifurcation. "(para. 7), the word "bifurcation" can best be paraphrased as______.

A. development


B. divide
C. depression



D. diversification

在布局视口中缩放视图，说法正确的是？（）

A.缩放布局视口不改变视口中视图的比例

B.拉伸布局视口不改变视口中视图的比例

C.视口比例锁定不可以用于非矩形视口

D.布局中使用Zoom命令时，需要选择其xp选项，如缩小0.5倍，则输入0.5xp

简述农业推广试验的基本要求。