[简答题]

During the early period of the earth’s history, the weather on earth apparently fluctuated between bright sun and showers. In recent times, however, the mountains and valleys on land and under water have had a great influence on the earth’s weather. They effect the movements of the thin film of water we call the sea and the thin layer of air around the earth. These movements produce changes in the temperature and humidity prevailing at the surface.
Although the sun is approximately 93 million miles away, its rays warm the earth. The areas that receive the sun’s rays vertically are, naturally, warmer than those areas that receive only slanting rays. (61)Vertical rays do not need to make as long a journey through the atmosphere before reaching the surface of the earth. Therefore, less of their heat is lost in the air and more of their heat is saved to warm the earth. Furthermore, slanting rays are spread over available at a given point.
The

[单项选择]　　During the early stages of the Industrial Revolution, advertising was a relatively straightforward means of announcement and communication and was used mainly to promote novelties and fringe products. But when factory production got into full swing and new products, e. g. processed foods, came onto the market, national advertising campaigns and brandnaming of products became necessary. Before large-scale factory production, the typical manufacturing unit had been small and adaptable and the task of distributing and selling goods had largely been undertaken by wholesalers. The small non-specialized factory which did not rely on massive investment in machinery had been flexible enough to adapt its production according to changes in public demands. 　　But the economic depression which lasted from 1873 to 1894 marked a turning point between the old method of industrial organization and distribution and the new. From the beginning of the nineteenth century until the 1870s, production had
A. a cooking utensil.
B. new child’’s toy.
C. tinned fruit.
D. household soap.

[单项选择]During the early American colonial years, com was more plentiful than wheat, so com breed was more common than wheat bread. Friendly Indians showed colonists how to grow com and how to prepare it for food and pioneer women then improved the Indian cooking techniques. When people traveled, they went on foot or horseback, sleeping and eating in the forests. They carded com bread for sustenance; the com bread came to be called journey cake. Later when roads and taverns were built and stagecoaches carded passengers, journeycake became johnnycake, a name many easterners still use for corn breed. The kinds of bread made with cornmeal were-and still are-almost without limit. Every region has its specialties.
How did the colonists learn to make com bread
A. They were shown how by the Indians.
B. They changed their wheat bread recipes.
C. They knew the technique before they arrived in America.
D. They tried to make more nutritious brea