While the sun is the major source of ultraviolet rays, it is not the source only.

Câu hỏi liên quan

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

  They spent two weeks at a fashionable ski _________ in Switzerland.

• Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

  Tom was not there; __________, his brother was.

• For many years, people have wondered that life exits elsewhere in the universe.

ZUNIA12

• The bold way in which Margaret Mead defined the terms “family” – based as much on choice as on biological relationship – is possibly the most enduring of her legacies

• Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

  The explorers walked all the way along the river from its mouth to its_________.

• The winter storm that raced through the area for the last two day moved east today.

• Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

  The police have asked that_________ who saw the accident should get in touch with them.

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

• Both a poem and a short story _    been written by a famous author.

• When T.S. Eliot’s “The Wasteland” appeared in 1922, critics were divided as to how good it was written

• Despite the disappearance of the Mayan Empire, there are still Mayans in the region that they once inhabited

• The various parts of the body require so different surgical skills that many surgical specialities have developed.

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

• Floyd Bennett was a pilot for two of the Arctic expedition of the 1920’s and the first pilot to fly over the North Pole.

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

• A majority students in this university are from overseas.

• Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

  We have not won yet; __________, we shall try again.

• Hoover Dam in Nevada is a multi purpose structure that provides flood control, hydroelectric powerful, and drinking and irrigation water

• Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

  __________ he has a headache, he has to take an aspirin.

• While searching for the wreckage of a unidentified aircraft, the Coast Guard encountered severe squalls at sea.