| Before the mid-nineteenth century,
people in the United States ate most foods only in season. Drying, smoking, and
salting could preserve meat for a short time, but the availability of fresh
meat, like that of fresh milk, was very limited, there was no way to
prevent spoilage, But in 1810 a French inventor named Nicolas Appert
developed the cooking-and-sealing process of canning. And in the 1850’s an
American named Gail Borden developed a means of condensing and preserving
milk. Canned goods and condensed milk became more common during the 1860’s, but supplies remained low because cans had to be made by hand. By 1880, however, inventors had fashioned stamping and soldering machines that mass-produced cans from tinplate. Suddenly all kinds of food could be preserved and bought at all times of the year. Other trends A. Causes of food spoilage B. Commercial production of ice C. Inventions that led to changes in the American diet D. Population movement in the nineteenth century [单项选择]
Passage 2
Throughout the nineteenth century and into the twentieth, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centers of corruption, crime, poverty, and moral degradation. Their distrust was caused, in part, by a national ideology that proclaimed farming the greatest occupation and rural living superior to urban living. This attitude prevailed even as the number of urban dwellers increased and cities became an essential feature of the national landscape. Gradually, economic reality overcame ideology. Thousands abandoned the precarious life on the farm for more secure and better paying jobs in the city. But when these people migrated from the countryside, they carried their fears and suspicions with them. These new urbanites, already convinced that cities were overwhelmed with great problems, eagerly embraced the progressive reforms that promise [简答题]Section B
Directions: In the following passage, a number of words are missing. Fill in each blank with a single suitable word. The world is filled with many interesting sounds. Some are
unpleasant to our ears while others are very (46) to hear, in
a single day you probably hear hundreds of different (47) .
All sounds are different. Some may be soft; others may be (48)
. Some sounds are high; others are low. Some sounds are useful.
Without sound we cannot talk or listen to (49) another. The
ringing of the alarm clock (50) people up. The hooting of a
car warns people (51) danger.
Some sounds are harmful when planes fly low over the land. The very loud sounds can cause (52) to houses. Very loud sound can even make people (53) . We know sound travels about one kilometre in three seconds. In a (54) you see the lightning first and then hear the thunder. This is because 我来回答: 提交
|
