群众应学习和掌握的法律法规主要有哪些？

美国方面声明：“美国认识到，在台湾海峡两岸的所有中国人都认为只有一个中国，台湾是中国的一部分。美国政府对这一立场不提出异议。”对这一公报的正确理解是[ ]

A．就其背景而言，中华人民共和国在积极争取恢复在联合国的合法地位

B．就其内容而言，美国承认了中华人民共和国政府是中国唯一的合法政府

C．就其影响而言，中美两国建立外交关系，实现了两国的正常化

D．就其地位而言，是外交史上的突破，掀起了中华人民共和国第三次建交高潮

何某以个人财产设立一独资企业，后何某因病去世，其继承人均表示不愿经营该企业，企业面临解散，则由（）进行清算。

A．全体继承人组织 

B．全体债权人组织 

C．债权人申请人民法院指定的清算人组织 

D．全体继承人组织或者债权人申请人民法院指定的清算人组织

On Feb. 17, 2009, it could snow all across America. Not outside, but in living rooms, on TV sets. That’s the date when broadcasters will switch to digital transmission, rendering millions of standard analog TVs useless. Consumers can avoid this whiteout, but only if they’re prepared. And there’s the challenge: How to inform the roughly 20 million households relying exclusively on analog sets that pull in their reception for free, through rabbit ears or a rooftop antenna. Analog TVs that receive cable or satellite will not be affected.
Consumers who own these sets don’t necessarily need to know why the federal government is mandating the change (to free up the airwaves for other purposes, such as wireless and public safety communications-though added benefits are better pictures and more channels). But they do need consistent and unbiased information on what to do and they need to be able to act on it. With fewer than 18 months to go, though, 56 percent of viewers with analog sets have never even heard of the switch. The General Accountability Office, the government watchdog, is concerned that with two government agencies involved, "no one is in charge."
The Federal Communications Commission is worried, too. "If we don’t do a better job of planning, we’ll have one of the biggest outrages Congress has ever seen," FCC commissioner Jonathan Adelstein told US senators last month. The options for consumers are fairly straightforward. Starting with the least expensive one, they are:

• a) buying a converter box using government coupons’
• b) subscribing to cable or satellite TV services, which will make the transition on their end, or
• c) buying a digital TV. But sharing this information is anything but simple. Because it has only $ 5 million to get the message out, the government is turning to the private sector for help with public-service announcements and educating consumers in stores. This partnership makes sense, if done right. Certainly, the broadcasting industry wants viewers to keep on watching, However, there’s a danger in their self-interest. Naturally, retailers also want people to buy new digital televisions instead of opting for low-cost converters, and cable and satellite providers want new subscribers. And industry may not have enough of a financial incentive to reach out to certain analog viewing groups, such as the poor or elderly (seniors make up 40 percent of analog households).
  Other serious issues remain. One is whether the converter boxes will be uniformly available in stores. Beginning in January, households should be able to apply to the Commerce Department’s National Telecommunications and Information Administration for up to two $ 40 coupons to offset the costs of converter boxes expected to be priced from $ 50 to $70. But some retailers may not stock the boxes if they don’t have much demand for them.
  And what about recycling analog televisions, of which there are an estimated 70 million More than anything, what’s needed is oversight and coordination of the conversion. Congress should designate one of the two government agencies involved in this project to take the lead, or empower an independent group to oversee the transition.

Explain the statement "However, there’s a danger in their self-interest. " (para. 3)

下列( )是生态现状评价、影响预测的基础和依据。

A．生态环境
B．生态现状调查
C．生物群落
D．生态因子

“循序而渐进，熟读而精思”体现了（）教学原则。