If you need to keep fit, then why don’t you take on  a sport such as badminton and tennis?

The Vermont Elememary Science Project, according to its founders, are designed to challenge some of most widely held beliefs about teaching.

Genetic engineering is helping researchers unravel the mysteries of previously incurable diseases so that they can getits root causes and find cures

As a young man, Darwin showed little promising as a biologist.

Electric motors range in size from the tiny mechanisms that operate sewing machine to the great engines heavy locomotives.

In spite modern medical technology, diseases caused by viruses are still not curable

Among the parameters that determine whether an environment is suitably for life as we know are temperature, water availability,oxygen content.

Ballet performers must be believable actor actresses as well as expert.

Anyone reproducing works without permission of the holders of the copyrights are breaking the law

Per capita income is an entire income dividing by the number of people in the nation

Everyone who has traveled across the United States by car, train, or bus are surprised to see such a large expanse of territory with such variation among the lifestyles of the people.

A pair of jeans _______ in the washing machine this morning.

Petroleum is composed of a complex mix of Hydrogen and Carbon

From 1785 to 1990, the capital of the U.S is located in New York.

The symptoms of diabetes in early stages are slight that people don’t notice them

Because oak trees are highly resistant of storm damage, they usually live long time.

Most Polar seals retreat to open water during the winter, but a few types have learn to survive on and under the ice year round.

To receive a degree from an American university, onetake courses beside those in one’s major field.

He has been hoped for a raise for the last four months, but his boss is reluctant to give him one 

In the United States, leading butter-producing states which are Wisconsin, California, and Minnesota.

Halifax is largest city and chief port of Nova Scotia and is the eastern terminus of Canada’s two railway systems .