decreasing returns to scale

阅读理解
decreasing grain prices along with growing costs of production means chinese farmers are unlikely to see a significant rise in income next year.
china's economic planning chief ma kai expressed the concern as the ***
undertakes an ambitious program to improve rural people's lives.
grain prices have been dropping since april; and prices of wheat,corn and rice fell 5 per cent from august to october compared with the same period last year,ma,minister of the national development and reform.commission,told an annual meeting on development and reform held over the weekend.
meanwhile,prices of production materials rose 9.1 per cent year on year during the first 10 months.
the situation makes it difficult to achieve a "new socialist countryside," which was last week highlighted(引起注意) as a new concept and "common action" of the whole *** and nation.
vice-minister of agriculture yin chengjie also said china's entry to the world trade organization also creates hurdles for income rises for the country's "780 million farmers.
farmers' income is expected to increase by 8 per cent this year,hitting the target set by the central *** at the beginning of this year.
last year,per capita net income (个人平均纯收入),of chinese farmers reached 2,936 yuan (us$362),up 6.8 per cent year on year,and the highest increase since 1997.
ma also said china would continue to seek fast,steady economic growth in 2006 but more efforts 'will be made to deal with the challenges brought about by overheating in some industrial sectors (区域).
(from china daily,december 5,2005)
5.the writer thinks it difficult to achieve a "new socialist countryside" because
a."new socialist countryside" is a new concept
b.grain prices decrease and production costs grow
c.prices of production materials rose 9.1 percent
d.many farmers are working in industrial sectors
6.the underlined word "hurdles" in paragraph 6 means
a.promotion b.difficulties
c.fear d.possibility
7.from 1997 to 2005,the highest increase in farmers' income was achieved in the year____.
a.2002 b.2003
c.2004 d.2005
8.which of the following statements is true?
a.grain prices in 2004 were a bit lower than those in 2005.
b.the development overheats in all industrial sectors.
c.a big income rise for farmers is unlikely in 2006.
d.china expected to increase farmers' income by 6.8% in 2005.
望能说明原因,依据.

Forgive my decreasing regards,my friends.But there is an emotion,not strong yet externally existing

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2、What are two kinds of attractive forces that can exist when ionic species are present?
3、Give two properties of molecules that are affected by H-bonding and explain how H-bonding affects these properties.
4、Draw the H-bonding in H2O,CH3OH,and HF.
5、The boiling point of H2O (100oC) is much higher that of HF(-83oC),even though they both form H-bonds and have similar molecular weights.Explain.

一道英语数学题请教一下学霸这个方程的symmetry,Increasing,Decreasing,constant的答案是什么?

decreasing 75by x percent give the same result as increasing 45 byx precent,what is the

西方经济学 different between decreasing returns to scale and diminishing marginal returns的不同

With petroleum reserve（石油储量）decreasing, the search is on to replace gas with a cleaner, greener alternative. Though much eco-talk has centered on biofuels from corn and soybeans, the biofuel that looks more likely to replace petroleum comes from a most unlikely source: algae（藻类）. Algae, like corn, soybeans, and other crops, grow via photosynthesis（光合作用）and can be processed into fuel oil. However, they yield 30 times more energy than land crops such as soybeans, according to the U.S. Department of Energy. Many algae species also can grow in saltwater and polluted water—while corn and soy require arable(适于耕种的) land and fresh water that will be in short supply as the world’s population balloons. “If you replaced all the diesel（柴油）in the U.S. with soy biodiesel, it would take half the land mass of the U.S. to grow those soybeans,” says Matt Caspari, chief executive of Aurora Biofuels, a Berkeley, Calif-based private firm that specializes in algae oil technology. On the other hand, the Energy Department says that if algae fuel replaced all the petroleum fuel in the United States, it would require only l5, 000 square miles, which is a few thousand miles larger than Maryland (12,407 squaree miles), the 42 nd state in land area. Another advantages: Because algae can be grown just about anywhere in a closed space, they’re being tested at several power plants across the nation as a carbon absorber. Smokestack emissions（烟囱排放物）can be pumped directly into the ponds, feeding the algae while keeping greenhouse gases out of the atmosphere. Although processing technology for algae fuel—also known as “oilgae” in some environmentalist circles —is improving, it’s still years away from reaching your local gas pump. “It’s just a question of cost, because no large-scale facilities have been built yet,” Caspari says. 小题1:The underlined word “yield” in Paragraph 2 can be replaced by “_______”. A．control B．require C．produce D．grow 小题2:Compared with corn a nd soybeans, algae_____. A．may pollute water and soil B．can grow in poor conditions C．provide much less energy D．need more special care 小题3:Ac cording to Paragraph 3, one of the advantages of algae fuel is that ____. A．it can be used more widely B．it is easier to produce C．it needs much less land D．it costs much les s money 小题4:Which of the following might be the best title for the text? A．Environmental Protection B．Biofuels from Corn and Soybeans C．The False Hope of Biofuels D．A Promising Oil Alternative

一个英语语法问题
Over the past decades,sea ice has been decreasing in the Arctic as a result of global warming.
在这句话里,为什么在has been后面是用“decreasing”?

Is the rate of divorce increasing or decreasing in China.Why?请用英文回答.