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在财富和生态二者之间，正当余村人民受生态问题困扰之际，时任浙江省委书记（）同志提出“两山”理论即绿水青山就是金山银山和将浙江建设成为生态省，打造“绿色浙江”，为余村人民的未来指明了方向。

A. 江泽民
B. 胡锦涛
C. 邓小平
D. 习近平

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浙江余村大规模的采矿给当地村民创造了可观的经济效益，据统计，余村集体年收入常年稳定在500余万元（）

A. 对
B. 错

“Good Greed”Do you want to know how to (1)___ money and do you bit for the environment? Investing (2)_ something that will save the planet is becoming easier as the private (3)_ begins to step in with powerful, profitable-driven for huge world problems. Take energy, for example. More and more investors are now looking to risk huge (4)_ in alternative energies safe in the knowledge that the world is not safe from carbon emissions.Solar power is one such case. There are a dozen or so (5)_ traded companies that manufacture solar materials or systems. And some big-name billion-stocks; one producer of high-efficiency solar-power cells, for example, was recently trading (7)_ the stock market at more than 166 times earnings.Cautious investors can’t forget that a similar optimism was (8)_ for the peak in e-business stocks in the nineties before the crash. In the case of solar power, such (9)_ are well-founded because solar energy has one big economic problem: it currently costs roughly twice (10)_ much per kilowatt- hour as power from the grid.(11) _, events are changing in a way that may encourage all investors. First, of course, there are rising petroleum prices and on one really believes the cost of natural gas will (12)_ go down again. Secondly, event as traditional energy prices begin to soar, solar cost are expected to (13)_ their descent. The cost of a solar kilowatt-hour has declined from 47 cents in 1990 to around 21 cents today, (14) it has remained stable. The third force is government subsidies. In the USA, for example, Uncle Sam now gives a 30% tax credit to business that use solar energy --- and that’s just the (15)_, with much more still to come.123456789101112131415

试述包与包之间有哪些主要的关系。

简要说明构成包图的基本元素和各自的作用。