The basic law of addition, subtraction, multiplication and division are taught to all elementary school students

In 1975, according to the National Center for Health Statistics, the average life expectancy for people born during that year is 72.4 years.

Because she didn't like shop very much, she did most of it with her personal computer.

Latex rubber is made from a milky substantial in plants and trees of the sapodilla family.

Narcissis, a character in mythology gazed at his own image in a pool so ardently that he fell into itself and downed.

In experiments with large numbers of animals crowded in small cages, some have not been affected, but the rest of have shown all of the symptoms associated with stress and mental illness.

The native people in the Americas were referred to as Indians because, according to the believe at the time, Christopher Columbus had reached the East Indies.

Studies of job satisfaction are unreliable because there is so many variables and because the admission of dissatisfaction may be viewed as a personal failure.

Aluminium has a hard imperious coasting which protects the metal from corrode. 

When caterpillars are fully-grown, they attach themselves to a leave or twig and form a shell around itself called a cocoon.

Some people think that the desire to wear sunglasses are more a need to impress than to protect the eyes

The religion attempts to clarify man's relationship with a superhuman power.

Computers have made access to information instantly available just by push a few buttons.

The athlete, together with his coach and several relatives, are travelling to the Olympic Games.

If Robert Kennedy would have lived a little longer, he probably would have won the election.

Sinaitic is the name of an alphabet which developed their symbols from Egyptian hieroglyphics.

After learned to print, elementary school children learn cursive writing.

Those of us who have a family history of heart disease should make yearly appointments with their doctors.

The professor had already given the homework assignment when he had remembered that Monday was a holiday.

Columbus, Ohio, the capital of the state, are not only the largest city in Ohio but also a typical metropolitan area, often used in market research.

Ekaette Okon earned the funds to go south by sale his new ideas about growing potatoes.

Joyce has not rarely missed a play or convert since she was seventeen years old.

To assure the safety of those workers who must handle radioactive material, the employer should not leave them enter contaminated areas without protective clothing.

Grace Peter, she spent her life working with the health and welfare of the families of workers.

Many of the famous advertising offices are located in Madison Avenue

The teacher told the students to don't discuss the take-home exam with each other. 

He said he must come to the party if he finishes his assignment for next week's seminar.

Before television became so popular, Americans used to entertain each other in the evening by playing games, saying stories, and singing songs.

Although maple trees are among the most colorful varieties in the fall, they lose its leaves sooner than oak trees.

After to have won the light-heavyweight title at the 1960 Olympic Games, Muhammad Ali began to box professionally.