新编大学英语教程阅读部分第二册unit1 02
(2009-09-17 13:43:42)
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分类: 英语学习 |
Unit01-2
The Menu
Food history tells us that in early restaurants the recitation of the available food dishes became an increasingly time-consuming chore; therefore, written menus were developed to help guide diners in their eating choices. This list of dishes was commonly handwritten on a chalkboard or listed on a board that could be easily seen by the customers. Developments in printing finally led to a change and the larger restaurants'floor plans[1] made a single handwritten menu impractical, so printed menus were introduced.
Delmonico's restaurant in New York City is often given credit for introducing the first printed menu in the United States in 1834. That menu, as well as others of the period, was simple in design and offered specific information. Special occasions led to a call for unique designs and eventually led to more highly decorated menus.
For the most part, however, menu decoration followed the art movements of the time. The highly decorated late 19th century menus, which were influenced by Victorian art[2], gave way to modern art in the 20th century. Developments with graphics and printing allowed distinctive menu cover art.
By the 1930s, the menu was seen as a part of the restaurant's plan to create a memorable meal. It could develop an appetite, tell a joke, explain a food item, create a mood, tell something of the history of the restaurant, and, above all, sell some food. Restaurant trade publications encouraged the use of the menu as part of the business strategy, and the National Restaurant Association promoted effective menu graphics in its annual competition of best menus in the nation. Its guidelines for judging included (1) originality, (2) legibility, (3) ease of handling, and (4) sales effectiveness. Restaurant Management magazine in its November 1935 issue stated that most restaurant owners considerably underestimated the importance of the appearance of the menu. The magazine went on to say that the menu really has two important functions: (1) to sell food; and (2) to repeat and emphasize the unique atmosphere of that restaurant.
In spite of the Depression of the 1930s[3], restaurants did well and menu design became important. There were increasing numbers of many different types of restaurants during this decade, including cafeterias, drive-ins, and lunch counters[4]in stores, as well as the traditional, more formal restaurants. Many of the restaurants developed themes in food, decoration and menu styles.
Progress in printing, photography, and especially color photography opened up more opportunities for creative expression_r. During the Second World War food rationing often hurt the business of restaurants, but as soon as victory was achieved, eating out became very popular again.
In spite of the risks of casual dining and fast food restaurants, the mid-20th century provided many new opportunities for creative menu design. By the end of the 1960s, the increasingly popular coffee shops and restaurants that featured a singular item such as pizza, steak, or pancakes used new menu graphics. The 1970s brought a decline in eating out, but the 1980s, especially in homes where both parents were working, brought a big increase in the demand for many types of restaurants. Since then, menu design has provided the American public with a pleasing prelude to the dining experience.
Some popular historians are studying menus as a very special kind of documentation of America's love of eating out. For many generations of diners, taking a restaurant menu has been a way of preserving a memory or documenting a trip or a voyage. Many restaurants have provided customers with souvenir versions of their menus. The restaurant owners believe that this is a good way of advertising. Thus the menu now serves a new, but also important function.
The Nutrients in Food
Nutrients are the parts of food that are important for life and
health. Nutrients are important for three reasons. First, some
nutrients provide fuel and energy. Second, some nutrients build and
repair body tissues. Third, some nutrients help control different
processes of the body like the absorption of minerals and the
clotting of blood. Scientists think there are 40 to 50 nutrients.
These nutrients are divided into five general groups:
carbohydrates, fats, proteins, minerals, and vitamins.
The first group of nutrients is carbohydrates. There are two kinds
of carbohydrates: starches and sugars. Bread, potatoes, and rice
are starches. They have many carbohydrates. Candy, soft drinks,
jelly, and other foods with sugar also have carbohydrates.
Carbohydrates are important because they provide the body with heat
and energy. Sugar, for instance, is 100 percent energy. It has no
other food value. Sugar does not build body tissues or control body
processes. If there are too many carbohydrates in the body, they
are stored as body fat. The body stores fuel as fat.
There are two types of fats: animal and vegetable. Butter, cream,
and the fat in bacon are animal fats. Olive oil, corn oil, and
peanut oil are vegetable fats. The body has fat under the skin and
around some of the organs inside. The average adult has 10 to 11
kilograms of body fat. If adults eat too many carbohydrates and
fats, they can add another 45 kilograms to their bodies. Fat is
extra fuel. When the body needs energy, it changes the fat into
carbohydrates. The carbohydrates are used for energy. Fat also
keeps the body warm.
The third group of nutrients is protein. The word "protein" comes
from a Greek word that means "of first importance". Proteins are
"of first importance" because they are necessary for life. Proteins
are made of amino acids, which build and repair body tissues. They
are an important part of muscles, organs, skin, and hair. The body
has 22 different amino acids. Nutritionists call eight of these
amino acids essential because the body does not manufacture
them.
There are two kinds of proteins: complete proteins and incomplete
proteins. Complete proteins, which the body needs for growth, have
all the essential amino acids. Meat, fish, poultry, eggs, milk, and
cheese have complete proteins. The body needs complete proteins
every day. Incomplete proteins do not have all the essential amino
acids. The proteins in vegetables and grains, for instance, are
incomplete proteins. Two ways to form complete proteins from
incomplete proteins are: (1) to mix vegetables and grains
correctly, or (2) to add a small amount of meat or milk to a large
amount of grains. The body can then use the complete proteins which
result from the mixtures.
Extra protein in the body can be changed to fat and stored as body
fat. It can also be changed to carbohydrates and used for energy.
If people do not eat enough carbohydrates for the energy that they
need, their body uses proteins for energy. Then the body does not
have the proteins that it needs to build and repair tissues. A
nutritious diet includes carbohydrates and fats for energy, and
proteins for growth.
The fourth group of nutrients is minerals. More than twenty
different minerals are in the body. Three of the most important
minerals are calcium, phosphorus, and iron. Calcium and phosphorus
work together. The bones and the teeth have 99 percent of the
calcium in the body. If people have enough calcium and phosphorus,
their bones and teeth will be strong and hard. In addition, their
muscles, nerves, and heart will work correctly. Milk and hard
cheeses are the best sources of calcium. After the age of 19,
people need 400 to 500 milligrams of calcium a day. People who do
not drink three glasses of milk daily can eat 50 hamburgers or 56
apples to get the calcium they need.
Iron is the mineral that makes blood look red. All lean meats have
iron; liver is an especially good source of iron. Whole grains[1],
nuts, some vegetables, and dried fruits also have iron. If there is
not enough iron in their diets, people will get a disease that is
commonly called anemia. Anemia is found all over the world. People
with anemia do not have enough iron in their blood. Because iron
carries oxygen, people who do not have enough iron do not get
enough oxygen for their normal activities. Their hearts beat faster
so their bodies can get more oxygen. People who have anemia often
get tired easily. Sometimes their skin looks white; it does not
look pink and healthy.
Nutritionists think there are thirteen vitamins that humans need.
Vitamins are important because they prevent diseases and help
control body processes. Vitamin A is important for healthy skin and
eyes. People who do not have enough vitamin A may have night
blindness. Some automobile accidents happen in the evening because
people who lack vitamin A do not see the road well after they look
at the bright headlights of a car. Vitamin A in the diet comes from
deep yellow fruits and vegetables, dark green leafy vegetables, and
whole milk [2].
When people have enough B vitamins, their appetite is good and
their nerves are calm. B vitamins in the diet come from some meats
and vegetables, milk, cottage cheese[3], and whole grains. When a
grain is processed, it loses vitamins. For example, there is a big
difference between brown and white rice. When rice is processed,
the brown outside is lost. The brown outside of rice has an
important B vitamin which white rice lacks. In short, brown rice
has more B vitamins than processed rice.
Vitamin C keeps the cells of the body together. It helps skin
tissue recover from cuts and burns. Vitamin C in the diet comes
from tomatoes, citrus fruits like lemons and oranges, and some
vegetables such as cabbage and green peppers.
Vitamin D is called the "sunshine" vitamin. When people sit
outside, ultra- violet rays from the sun change a fat in their skin
to vitamin D. Vitamin D is also in cod liver oil and the yellow of
eggs. It is sometimes added to milk. Vitamin D helps the body
absorb calcium. It helps build strong bones, and it prevents a
disease in children that is called rickets. When children have this
disease, their bones bend because they do not become hard. Rickets
is seldom found in sunny, tropical countries. Rickets is more
common in countries that have long winters with little sunshine, in
cities that have pollution that keeps the sun out, and in towns
surrounded by mountains that keep the sun out.
There is no one food that is essential, but there are nutrients
that are necessary for good health. If people want to be healthy
and active, they need to get all the essential nutrients. A healthy
body needs carbohydrates, fats, proteins, minerals, and
vitamins.