Gwendolyn Brooks, which won a Pulitzer Prize for Poetry in 1950, had 75 poems published by the time she was twenty.

A thunder usually follows lightning by five seconds for every mile between flash and the observer.

Today, the menu on the ISS includes more than 100 items …….. astronauts can choose their daily meals before they fly into space.

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

None two butterflies have exactly the same design on their wings.

Neil seemed to have a good time at the party, ____?

Some psychologist believe those who are encouraged to be independent, responsible, and competent in childhood are likely more than others become motivated to achieve.

One inventor that Thomas Edison can take credit for is light bulb.

British people living outside UK have to become accustomed to the image Britain that appears to exist all throughout round the world.

About 200 million years before, all the continents were part of vast land mass called Pangaea.

Find the word which has a different sound in the part underlined.

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

In the 1800’s store owners sold everything from a needle to plow, trust everyone, and never took inventory.

Some ofthe stiffest competitions the jackals face on plains of Africa comes vultures.

So far most a million different species of insects have identified and named.

Algebra is the branch of mathematics concerned with operations on sets of numbers or other elements that often represented at symbols.

The environment can be defined as all living and nonliving items in an area at specify time.

They are going to have to leave soon, and so do we.

You needn’t do that when the maid is here, _____?

It has been found that the lengthlight or dark periods influence certain activities of plants.

All almost electricity for industrial use comes from large generators driven by steam turbines.