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An (octopus has three hearts to pump its blood throughout their body

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The ozone layer must be protected because it shields the Earth from excessive violet radiations.

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

There has been a hot debate among the scientists relating to the pros and cons of using robotic probes to study distant objects in space.

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Authorities are worried about the increase of the drug abuse .

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The duty of  policeman is the maintains of the law and order.

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Sleeping the whole day, to eat too much and never going out is unhealthy.

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How much times did Rick and Jennifer have to do the experiment before they obtained results they had been expecting?

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Gold, silver, and copper coins are often alloy whit harder metal to make them hard as enough to withstand wear.

He stayed home______the rain. 

He wanted to know_________  .

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Many heavy work that was once done by hand now be done more easily with the help of compressed air.

Choose the corect answer to complete. "I'm ____ to announce that you were selected to be our new faculty manager."

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Drying food by means of solar energy is a ancient process applied wherever food and climatetic conditions make it possible.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

This warning sign indicates that you ____ step on the grass.

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Tea did not become popular in Europe until late 17th century when it has been first imported to England and Holland.

Choose the corect answer to complete. "We found it truly ____ to hear that Mr. Dat had been appointed to the committee."

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A number of  Pacific Islands are volcanoes that have pushed up from the ocean floor, others are the tops sunken mountain ranges

Depending on many factors, including climate, mineral content of the soil, and the permanency of surface water, wetlands may be moss, gras, or covering with shrubs or trees.

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In the twentieth century, there was considerable interesting among sociologists in the fact that in the United States the family was losing traditional roles 

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Because it is a healthy way to exercise, aerobic dancing is considered as an wonderful method for release tension.

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Southern California, is known for its mild winters, has become the home for many senior citizens escaping Northern winters.