While studying the chemistry of human body, Dr. Rosalyn Yalow won a Nobel Prize for the research she conducted on the role of hormones.

Many small islands in the Indian Ocean are threatened by raising sea levels.

The graphics ability of a computer depend on the speed of its processor and the size of its RAM

The diameter of the Sun is more than one hundred times greater than the Earth.

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

Every student  must make up their own study list of the classes he is going to take at the beginning of the quarter 

Choose the correct answer to complete the sentence. "_____ clear evidence, your company couldn't deny having dump a large quantity of toxins into the sea"

George Washington, his portrait appears on the quarter coin and the dollar bill, served two terms as president.

If dinosaurs would have continued roaming the earth, man would have evolved quite differently.

It’s a lovely old house, I agree, but can we afford to moderning it?

In 1950 , it was naively predicted that eight or ten computer would be sufficient to handle all of the scientific and business needs in the United States.

The bath overflowed and the water dropped through into the living room

After a while, the track we have been following became thick undergrowth.

One of the most difficult questions in defining sleep is “What are the functions of sleep?”

The world would look eerie different if human eyes were sensitive to infrared radiation.

Psychologists at the University of Kansas has studied the effects of the color of a room on people’s behaviors

The fragrant leaves of the laurel plant to sell commercially as bay leaves and are used for seasoning foods.

Choose the correct answer to complete the sentence. "Planting trees can contribute to _____ global warming"

Nocturnal creatures, raccoons forage primarily at night and spend their days rest in their dens

The pace of living is too fast for me in this town. I need to move to a village, where everything happens more slower.

The police officer lectured the children for ten minutes about the dangers to throw stones, but then let them off with  warning.