Which countries or places observe this festival？（)

Which of the following countries belong to Europe?()

Exports are either raw materials or manufactured goods. Raw materials are products of the land, such as cotton, timber or rubber. Some raw materials such as iron ore, come from mines. These

Exports are either raw materials or manufactured goods. Raw materials are products of the land, such as cotton, timber or rubber. Some raw materials such as iron ore, come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods.

Some countries produce food for export, for example, meat, sugar, or cereals such as wheat and maize. These countries are agricultural countries. An agricultural county needs fertile land and a good climate. A cold, dry climate is not suitable for agriculture.

A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case, it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.

21. From the first sentence of the passage we can know that there are()kinds of exports.

A. two

B. three

C. four

22. Raw materials are often exported by the countries that produce them to other countries where().

A. they are consumed

B. they are made into finished products

C. they are wasted

23. The countries which produce food for export,for example, meat, sugar, or cereals such as wheat and maize are()countries.

A. developed

B. industrial

C. agricultural

24. An industrialized country usually has to import foodstuffs because().

A. it cannot always produce enough food for its own needs

B. it doesn't has fertile land and a good climate

C. it relies on exports of manufactured products

25. The best title of this passage is().

A. Agriculture and Industry

B. Export

C. Production

A very important world problem is the increasing number of people who actually inhabit this planet. The limited amount of land and land resources will soon be unable to support the huge population if it continues to grow at its present rate.
So why is this huge increase in population taking place？ It is really due to the spread of the knowledge and practice of what is becoming known as "Death Control". You have no doubt heard of the term "Birth Control". "Death Control" is something rather different. It recognizes the work of the doctors and scientists who now keep alive people who, not very long ago, would have died of a variety of then incurable diseases. Through a wide variety of technological innovations that include farming methods and the control of deadly diseases, we have found ways to reduce the rate at which we die. However, this success is the very cause of the greatest threat to mankind.
If we examine the amount of land available for this ever-increasing population, we begin to see the problem. If everyone on the planet had an equal share of land, we would each have about 50,000 square meters. This figure seems to be quite encouraging until we examine the amount of usable land we actually have. More than three-fifths of the world's land cannot produce food.
Obviously, with so little land to support us, we should be taking great care not to reduce it further. But we are not! Instead, we are consuming its "capital" — its nonrenewable fossil fuels and other mineral deposits that took millions of years to form. but which are now being destroyed in decades. We are also doing the same with other vital resources not usually thought of as being nonrenewable such as fertile soils, groundwater and the millions of other species that share the earth with us.
It is a very common belief that the problems of the population explosion are caused mainly by poor people living in poor countries who do not know enough to limit their reproduction. This is not true. The actual number of people in an area is not as important as the effect they have on nature. Developing countries do have an effect on their environment, but it is the populations of richer countries that have a far greater impact on the earth as a whole.
According to the article, what contributes to the population increase？
A．Birth explosion.
B．Birth Control.
C．Technological innovations.
D．Death Control.

Which of the following payment is not used in payment?()

It is a terrible illustration of man &39; s weakness to nature ,and the tsunami（海 啸) tha
It is a terrible illustration of man &39; s weakness to nature ,and the tsunami(海 啸) that struck the Japanese coast in March, 2011 has illustrated the difficulty of fighting against natural disasters, even for a prosperous nation.
Totally preventing tsunami-damage is impossible. But there is much that can be done to minimize damage and loss of life. Measures that can be taken include designing solid buildings, and developing early-waming systems, public education programs and evacuation(疏散) strategies. Moreover, the approach of a tsunami is possibly picked up by the sensors of complicated international waming systems. Countries can use radio and television broadcasts as well as loudspeaker networks to warn the public.
But an early waming system depends on how far the tsunami strikes, if it&39; s close by, the warning system is not going to be very effective. When people are faced with an unstoppable force like a tsunami the massive waves created by events like underwater earthquakes, the best course of action for them is to get inland and to the higher ground as quickly as possible.
51. The first paragraph tells us that________
A.man can easily defeat the nature
B.tsunamis take place only in Japan
C.man’ s ability to cope with natural disasters is limited
D.the tsunami-damage in Japan is not so terrible
To prevent tsunami-damage, the following measures can be taken EXCEPT________A.designing firm buildings
B.developing early-warning systems
C.developing evacuation strategies
D.keeping the public unaware of the seriousness of tsunamis
When a tsunami happens, the best course of action for people is to________A.listen to radio and television broadcasts for information
B.get inland and to the higer ground as quickly as possible
C.stay where they are
D.rely on the warning systems
According to the passage , which of the folloiwing can cause a tsunami ？A.Storms
B.Massive waves
C.Underwater earthquakes
D.Floods
Which of the following statements is correct according to che passage？A.The total prevention of tsunamis is possible
B.Rich countries are less affected by tsunamis than poor countries
C.Approaching tsunamis can possibly be picked up by sensors
D.An early warning system is effective when a tsunami is close by

请帮忙给出每个问题的正确答案和分析，谢谢！

阅读理解阅读下面的文章，根据文章内容判断文章后的句子是正确（T)还是错误（F)。THE INTERNATIONA
阅读理解
阅读下面的文章，根据文章内容判断文章后的句子是正确(T)还是错误(F)。
THE INTERNATIONAL FOOD SAFETY AUTHORITIES NETWORK (INFOSAN)
With the rapid globalization of food production and trade, international issues related to food safety are likely to increase. Food safety authorities all over the world have realized that food safety problems should be carried out at both national and international levels. There is a pressing need for exchanging routine information on food safety issues, and sharing experiences and information quickly when a food safety related event takes place.
INFOSAN is a joint program between the World Health Organization (WHO) and the Food and Agriculture Organization of the United Nations (FAO). This global network includes 181 Member States. Each has a designated INFOSAN Emergency Contact Point which manages communication between national food safety authorities.
The network aims to:
Promote the rapid exchange of information during food safety related events;
Share information on important food safety related issues of global interest;
Promote partnership and cooperation between countries;
Help countries strengthen their capacity to manage food safety risks.
As part of its routine activities, the INFOSAN Secretariat publishes reports in six languages and provides members with summaries and guidance on relevant food safety issues.
INFOSAN helps exchange food safety information and experience among its members. It is also a useful resource for other public health organizations which recognize INFOSAN as an organization through which findings of investigations and strategies for improving food safety may be shared.
INFOSAN monitors possible international food safety related events in close cooperation with the WHO Alert and Response Operations program. INFOSAN can work with other international organizations to provide assistance to the countries or regions with emerging food safety events of possible international concern.
操作提示：句子正确选择下拉选项框为“T”;句子错误选择下拉选项框为“F”。
1. It is probable that there will be more and more safety related issues worldwide. {T; F}
2. Food safety authorities in each country believe that food safety problems should be solved within their country. {T; F}
3. The major duty of the INFOSAN Emergency Contact Point in each FAO member state is to manage communication between national food safety authorities. {T; F}
4. Public health organizations can get findings of investigations and strategies for food safety improvement from INFOSAN. {T; F}
5. INFOSAN monitors possible international events concerning food safety independently. {T; F}

Today the world's economy is going through two great changes, both bigger

　　Today the world's economy is going through two great changes, both bigger than an Asian financial crisis here or a European monetary union there.

　　The first change is that a lot of industrial_67_is moving from the United States, Western Europe and Japan to _68 _countries in Latin America, South-East Asia and Eastern Europe. In 1950, the United States alone _69_ for more than half of the world's economy output. In 1990, its _70_ was down to a quarter. By 1990, 40% of IBM's employees were non-Americans; Whirlpool, America's leading _71_ of domestic appliances, cut its American labor force _72_ 10%. Quite soon now, many big western companies will have more _73_ (and customers) in poor countries than in rich _74_ .

　　The second great change is _75_, in the rich countries of the OECD, the balance of economic activity is _76_ from manufacturing to _77_. In the United States and Britain, the _78_ of workers in manufacturing has _79_ since 1900 from around 40% to barely half that. _80_ in Germany and Japan, which rebuilt so many _81_after 1945, manufacturing's share of jobs is now below 30%. The effect of the _82 is increased _83_ manufacturing moves from rich countries to the developing ones, _84_ cheap labor _85_ them a sharp advantage in many of the _86_ tasks required by mass production.

　　67. A. product B. production C. products D. productivity

　　68. A. other B. small C. capitalistic D. developing

　　69. A. accounted B. occupied C. played D. shared

　　70. A. output B. development C. share D. economy

　　71. A. state B. consumer C. representative D. supplier

　　72. A. by B. at C. through D. in

　　73. A. products B. market C. employees D. changes

　　74. A. one B. ones C. times D. time

　　75. A. what B. like C. that D. how

　　76. A. ranging B. varying C. swinging D. getting

　　77. A. producing B. products C. servicing D. services

　　78. A. proportion B. number C. quantity D. group

　　79. A. changed B. gone C. applied D. shrunk

　　80. A. Furthermore B. Even C. Therefore D. Hence

　　81. A. armies B. weapons C. factories D. countries

　　82. A. question B. manufacturing C. shift D. rebuilding

　　83. A. with B. as C. given D. if

　　84. A. while B. whose C. who's D. which

　　85. A. give B. is giving C. gives D. gave

　　86. A. repetitive B. various C. creative D. enormous

What is the minimum value of H（p1,…,pn)=H（P) as P ranges over the set of n-dimensional probability v
What is the minimum value of H(p₁,…,p_n)=H(P) as P ranges over the set of n-dimensional probability vectors？ Find all P's which achieve the minimum.

Studies show that the world in 2010 will be more crowded，more polluted and less stable ecologically(在生态方面)than the world we live in now.Visible ahead is serious stress involving population，resources and environment.Despite greater food output，people in the world will be poorer in many ways than they are today.For hundreds of millions of the extremely poor，the outlook for food and other necessities of life will be no better.For many it will be worse.While the economies of the developing countries are expected to grow at a faster rate than those of the industrialized nations，the total national product per head in most less developed countries remains low.The existing gap between the rich and poor nations will further widen.World food production is estimated to increase by 90 percent from 1970 to 2010.Most of that increase goes to the countries that already have relatively higher per-head food consumption(消费).Meanwhile，per-head consumption of food in the developing countries will scarcely improve or will actually fall far below the present inadequate level.What is worse is prices for food are expected to double.As a result，many less developed countries will have increasing difficulties meeting energy needs.For the one quarter of mankind that depends primarily on wood for fuel，the outlook is not hopeful.Regional water shortage will become more severe.In the 1970-2010 period population growth will require twice as much water as it does today in nearly half the world.Still greater increases would be needed to improve standards of living.Development of new water supplies will become more costly.
1. According to the passage，in 2010 while output of food will be greater，_____.
A. people will have sufficient food supplies
B. the world resources will become more than enough
C. in most developing countries people will have less food than they have today
D. the living standards of the world's population will improve greatly
2. According to the author，in 2010 for many poor people，_____.
A. things will get even worse
B. things will be a little better
C. it will be necessary for them to improve their housing
D. it will be impossible to obtain enough necessities of life
3. In the 1970-2010 period，the large proportion of global increase of food production goes _____.
A. to 90 percent
B. to developing countries
C. to any country in the world that needs it
D. to those countries that already have high per head consumption
4. How does the author predict the development of new water supplies in the future_____
A. Water shortage will occur in some regions only.
B. Development of new water supplies will be more expensive.
C. The less developed countries need more water than the developed ones.
D. The demand for water will double with the growing population.
5. Which of the following may best serve as the title of this passage_____
A. The Future Problems in the World.
B. Water and Air Pollution.
C. Water and Food Shortages.
D. Food Production and Consumption.

请帮忙给出正确答案和分析，谢谢！

Which of the following is CORRECT about the students working for Seo？A．They derive great p
Which of the following is CORRECT about the students working for Seo？
A．They derive great pleasure from the work.
B．Not all of them have profound physical knowledge.
C．Their work is highly recognized by NASA.
D．They are fascinated by the mysterious space.

请帮忙给出正确答案和分析，谢谢！

to capture the appropriate placement of specifiers, heads ａnd complements, we can formulate a single general phrasal structural rule as the xp rule: xp → (specifier) x (complement), in which x stands for n, v, a, ａnd()