Monday, April 26, 2010

Argument Examinations


Examinations are one way to assess students which are used at schools and universities all over the world. Some people believe that examinations are fair way to judge their skills and knowledge. In this essay I will discuss both sides of the topic wither exams are a fair assessment or not.
People who support banning exams believe that it’s making the students nervous and stressed about taking exams .For example, the student got poor grads .Some people think that exams are an fair way to assess knowledge and using graded homework is better. Taking exam is not a good way for a complete evaluation of a student’s and abilities .For instant the teacher knows the level of students who deal with him in class.
On the other hand some people believe that taking exams are a good incentive for students to study and review course materials .For example, students study hard for exams. People who support exams think that the exams are a fair assessment. For example, the same test is used for all students and the same time is given. Some people think that the exams help students to know what they understand and don’t understand of the course content .If they are study for exam and stuck in some points they ask the teacher to explain the points again.
In conclusion ,there are strong arguments both for and against banning exams. I believe the points in favor of using examinations are stronger than those against.

Saturday, April 24, 2010

The number of U. S. farms and all farm workers



The graph shows the comparison between the number of farms and a farm workers in 1910 – 2000 in the U.S.
The biggest change was between 1950 – 2000 with workers , which fall sharply starting fifty years ago. The second major change was in the workers. The number slightly decreased for twenty years from 1950 to 1970. The third change was in form worker numbers which declined sharply two years ago. In contrast, the number of farms steadily during the first forty – years period. In the next forty – years the numbers of farms slightly decreased. The farm numbers are expected to fall sharply. After recent fall, numbers had decreased steadily for forty – years. By the end of the period, the farm number stayed stable forty – years.
In conclusion, the overall the trend shows a decline in both numbers in farms and farms workers in the 20th century in the U.S.

Tuesday, April 13, 2010

Changes in Milk Consumption in USA (1950 – 2000)


The graph compares annual consumption of low fat and whole milk in liters per person in the second half of the 20th century in USA. Overall, Americans drink much less milk now than at the start of the period.
The biggest change was the dramatic drop in total milk consumption. It fell from about 130 liters per person in 1950 to only around 90 liters five decades later. The second major was in the type of milk drunk. At the beginning, whole milk was more popular at 120 liters, but it fell sharply to about a quarter that by 2000. In contrast, the amount of low fat milk consumed shot up. It rose from roughly 10 liters in 1950 to five times that in 1980, when consumption was almost tied with whole milk.
In conclusion, the American diet with regard to dairy changes significantly over the time represented. Total consumption decreases but low-fat finally outranks whole milk.

Saturday, April 10, 2010

argument:animal testing


Have you ever considered the fact that every year millions of animals undergo painful death as a result of scientific research? While most people think animal testing is necessary, others are upset by what they see as needless suffering. This essay outlines some of the arguments for and against animal testing.
First, let’s look at the advantages. One very positive point is that many medical treatments and procedures have been developed from such experiments. Since animals share many features with humans, scientists use animals to test the safety and effectiveness of newly developed drugs. Moreover, there is a large supply of animals. Some, such as mice and rats, have many babies, and there is no danger of extinction for these species. Finally some advocates think that animals are less valuable than people. If there is a mistake, it will not cost a human life.
However there are also a number of arguments against animal testing. Perhaps the most important is that animals may be suffering unnecessarily. Critics do not believe that every new drug needs to be tested on animals. Furthermore, some feel animal testing is ineffective; they point out that many drugs still have to be withdrawn from the market despite extensive testing. Last, some campaigners would like to see alternative used. They feel more humane testing is possible and, too, that we could rely more on organ donors.
In conclusion, we need to ensure that animals used for experimental purposes do not suffer much pain. Although some animal testing may be unavoidable at present, treating our fellow creatures mercifully will demonstrate our humanity.