[填空题]The demand for different food products depends on four factors: the number of people in the area, (81) their standard of living, and their cultural attitudes. (82) The first two factors are obviously. The third, (83) cultural attitudes, often depends in diet habits and religion. (84) Take attitudes toward diet in the United States, for an example. (85) Changes, preferences, and prices have had an interesting effect on consumption in the U. S. In 1940, Americans consume (86) 19.4 pounds of butter and margarine per person, and most of it was butter. Now they eat less 13 pounds, most of it margarine. (87) Before World War Ⅱ, people in the U. S. averaged 155 pound (88) of wheat flour a year; now they average about 135. Americans are also eating much few fruit, (89) but they’re eating many more

[填空题]The demand for different food products depends on four factors: the number of people in the area, (81) their standard of living, and their cultural attitudes. (82) The first two factors are obviously. The third, (83) cultural attitudes, often depends in diet habits and religion. (84) Take attitudes toward diet in the United States, for an example. (85) Changes, preferences, and prices have had an interesting effect on consumption in the U. S. In 1940, Americans consume (86) 19.4 pounds of butter and margarine per person, and most of it was butter. Now they eat less 13 pounds, most of it margarine. (87) Before World War Ⅱ, people in the U. S. averaged 155 pound (88) of wheat flour a year; now they average about 135. Americans are also eating much few fruit, (89) but they’re eating many more

[填空题]Many different products can be ordered on line.
Shoppers can ______ on line.

[填空题]The demand for goods depends totally on the price of demanded goods.

[单项选择]In China, there’re many different kinds of food. Some of them are very popular. Dumplings are the real Chinese food. Now let’s talk about them.
Everyone in China likes dumplings very much, and there are many different kinds of dumplings. Some have meat and vegetables in them; others have sugar, eggs and so on. I like dumplings with vegetables and pork better than any other kind.
Usually people make dumplings at home. If you have no time to make them, you can buy them in any supermarkets. Then you take them home and eat them with vinegar.
The Spring Festival is very important in China. When it comes, we make dumplings. usually we put a coin (硬币) in a dumpling. If one eats the dumpling with the coin in it, he will be lucky in the year.

What kind of dumplings does the writer like best
A. Dumplings with meat and vegetables.
B. Dumplings with sugar, eggs and so on.
C. Dumplings with vegetables and pork.

[单项选择]In the 1920s demand for American farm products fell, as European countries began to recover from World War I and instituted austerity(紧缩) programs to reduce their imports. The result was a sharp drop infarm prices. This period was more disastrous for farmers than earlier times had been, because farmers were no longer self-sufficient. They were paying for machinery, seed, and fertilizer, and they were also buying consumer goods. The prices of the items farmers bought remained constant, while prices they received for their products fell. These developments were made worse by the Great Depression, which began in 1929 and extended throughout the 1930s.
In 1929, under President Herbert Hoover, the Federal Farm Board was organized. It established the principle of direct interference with supply and demand, and it represented the first national commitment to provide greater economic stability for farmers.
President Hoover’s successor attached even more importance to this problem. On
A. The impact of the Great Depression.
B. The shrinking of overseas markets.
C. The destruction caused by the First World War.
D. The increased exports of European countries.