He had so a difficult exercise that he couldn’t do i.

Today’s nuclear fission fuels are the remnants of which used to be a much more mixture of radioactive and fissionable materials two billion years ago and earlier.

The amount of books in Library of Congress is more 58 million volumes.

New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture

Author has not rarely written anything that was not a best-seller

In architecture, a capital is the top portion of  column.

According to most psychological studies, body language expresses a speaker’s emotions and attitudes, and it also tends to affect the emotions and attitudes of listen.

Esperanto is an unique language because it was created by a man called Ludwig Zamenhoff.

Believed that Jack had home safely, we felt relieved.

Choose the word which has a different stress pattern from the others.

One responsibility of human beings is not to interfere the actions of another people except in the face of injustice

President Wilson had hoped that World War I be last great war, but only two decades later, the Second World War was erupting.

By the time the police____________, the thieves ____________ the stolen money.

This will have a effect about agriculture

The average cat sleeps sixteen hours for a day short intervals called ‘cat naps.

The decade of the 1920’s was significant in Georgia’s history because of the rapidity with what agriculture declined the state.

Inventing by Roger Bacon, the magnifying glass led to the creation of scientific tools which have produced immeasurable scientific progress

The American anarchist Emma Goldman infused her spirited lectures, publishes, and demonstrations with a passionate belief in the freedom of individual

The Humber River and its valley form a major salmon-fishing, lumbering, hunting , and farmer region western Newfoundland, Canada.

Dwelling primarily in the ice Northern Polar seas,  whales are characteristically small, white, agile, and elusive

With above 20,000 species, the world’s population of ants has continued to increase even as other animal populations have declined.