Some bacteria are extremely harmful, but anothers are regularly used in producing cheeses, crackers, and many other foods.

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• Gold, silver, and copper coins are often alloyed whit harder metals to make them hard as enough to withstand wear.

• It sounds like something wrong with the car's engine_______, we'd better take it to the garage immediately.

• In the future, we will certainly lead a more healthier life.

ZUNIA12

• Sheep have been domesticated for over  5,000 years ago.

• The first part of the test was easy; the second, ________, took hours.

• Water ice, and snow play a role in affecting an Earth’s rotation .

• In human beings, as in other mammal, hairs around the eyes, in ears and in the nose prevent dust, insects, and other matters from entering these organs.

• The coal is the world’s most abundant fossil fuel.

• Some of us have to study their lessons more carefully if we expect to pass this examination

• The discover of gold and silver in the rugged mountains of Nevada in 1858 attracted many fortune-seekers to that area 

• Trees are designed as neither hardwoods or softwoods.

• Rattan, a close relative of bamboo, is often used to make tables, chairs, and other furnitures .

• _______ she came to know him better, she relied on him more.

   

• _______ we lived in town, we often went to the theater

• The first things a new international student must do include renting an apartment, registering for classes, and to get to know the city.

• The composer Verdi has written the opera Aida to celebrate the opening of the Suez Canal, but the opera was not performed until 1871

• Some heating devices convert chemist energy like that found in wood and coal into heat energy.

• We had planned to go to the movies, but, because of the amount of work I had, I spent the evening to study

• On February 20th, 1962, “Friendship 7” orbiting the Earth in a manned flight that lasted just under five hours.

• Mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each:
  The recent explosion in TV, with the introduction of satellite and cable channels, has caused an increase in ______ for sports as entertainment.