Every scientist knows that gravity is the force that maintains the earth and the planets in its orbits around the Sun.

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• Most of the damage property attributed to the San Francisco earthquake of 1906 resulted from the fire that followed.

• Marie Curie, a famous Polish physician, won the Nobel Prize when she discovered the radioactive metals Radium and Polonium.

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

  Both community _____ and volunteerism are an investment in our community and the people who live in it.

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• Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following question:

  Lan is very tired. ________, she has to finish her assignment before going to bed.

• It should not be assume that the lower the price, the happier the buyer.

•  She gives her children everything ..................... they want.

• Everybody _    doing the test in the room.

• That the poverty action group was set up in the 1970s was a sign of public aware during that decade.

• Mark the letter A, B, C, or D on your answer sheet to indicate the best answer in each of the following questions:

  The meeting will start when everyone__________

• The Joshua tree is marked by their sword shaped leaves and greenish white flowers.

• In the whole I agree with what you’re saving, but I’m not sure about your last point

• In the sixteenth century, Francois Vieta, a French mathematician, used the vowels “a”, “e”, “i”, “o”, “u” to represent a unknown number.

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

  This morning I bought a newspaper and a magazine. _________ newspaper is in my bag but I don’t know where _________ magazine is.

• Wealthy people have always desired and wear precious stones because their beauty is lasting.

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

• Malnutrition is a major cause of death in those countries where the cultivation of rice have been impeded by recurrent drought .

• Few people realize that the musician of the national anthem of the United States originally belonged to the British drinking song

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

  Since changing the way of production, many craftsmen have voluntarily joined together to form _______.

• The author has not rarely written anything that was not a best-seller.

• Medical research indicates that large amounts of Histamines can responsible for cold, high fever, and other respiratory reactions.