The Homestead Act of 1862 granted 160 of land for any settler who would spend fiveyears on the land

He has less friends in his class now than he had last year

In the nineteenth century, women used quilts to inscribe responses to social, economic, and politics issues

The girl who were injured in the accident is now hospital.

The average temperatur Mars, the fourth planet from the Sun, is about eighty degrees than colder on Earth

Our primary goal is to teach students to discover the truth. But we have also other aims, such as providing them with knowledge or to teach them to work consciously

After driving for twenty miles, he suddenly realized that he has been driving in wrong direction.

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

Dentist gave me a check-up and then telling me I needed two teeth.

I've just spent two weeks looking _____an aunt of mine who's been ill. 

When ctivelyhunting, a dolphin sends out transmitting five signals every second.

Many of the population in rural areas is composed of manual workers

Viscosity is measurement describing the relative difficulty or easy with which liquids .

To make out the time, we booked a direct flight from California to New York.

It was Mary Anderson, an amateur invention, who first patented windshield wipers automobiles

They asked us, Henry and I, whether we thought that the  had been presented fairly and accurately

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

Water power gives energy without_________.

What caused explosion in the factory it is still unknown

In the 1840s, Joseph Henry made discovery of electromagnetism.

Science and technology are part of the knowledges educated people