Inventing by Roger Bacon, the magnifying glass led to the creat of other scientific tools which have produced immeasur scientific progress.

Most of the magnesium used in the United S comes from the sea water.

The average salt content of seawa is more than three percents.

Most country music songs deeply personal and deal with themes of love, lonely, and separation.

A calorie is the quantity of heat required to rise one gallon of water one degree one atmospheric pressure.

Choose the correct answer to complete the sentence. "Volunteers believe that some of the _____ people in the world are those who help to bring happiness to others"

The development of professi sports in the United Stated dates back to nineteenth century.

Floods, earthquakes and other disaster happen all over the world, causing death and material damag

Michael has worked in three different companies in three different positions, so he has more experience than the other applicant’s.

Choose the correct answer to complete the sentence. "The Citadel of the Ho Dynasty, _____ is located in Thanh Hoa Province, was added to UNESCO's World Heritage List in 2011"

Who would have won the World War II if the nuclear bomb _____ by the Nazus first? 

As soon as they arrived at the hotel they took the elevator to their room and straight to bed cause they were so tired.

Choose the letter A, B, C or D to complete the sentences. " He gave up the job ________ the attractive salary."

Choose the best option:

__ UNESCO criteria for outstanding universal value to humanity, Trang An Scenic Landscape Complex was added to the World Heritage List in 2014.

Nobody was watching, so the little boy took the pac of sweets from the she and putting it in his pocket

Though he did not develop sign language, Laurent brought it on America from France

She sighed with relif when she found out that she has passed the difficult test.

In 1984, the world population rose to over 4.7 billion, almost 85 million from an estimate made the year ago.

Choosethe word(s) CLOSEST in meaning to the following word(s). "were not under the impression"

Residen in some cities can call an electrical inspector to have the wiring in their house to be checked.

Since infection can cause fever as well as pain, it is a good idea to check a patient’s temperature.