Eight decibel, which is a unit of relative loud, is the smallest amount of change detected by the human ear.

Câu hỏi liên quan

• We are very pleased with Susan s effort – she applies herself very well with the task in hand.

• Someone who has ever tried to pick up spilled Mercury will disagree that this element is hard to handle.

• Economists have tried to discourage the use of the phrase “underdeveloped nation” and encouraging the more accurate phrase “developing nation” in order to suggest an ongoing process.

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• The Library of Congress, located in the nation’s capital, houses history documents and photographs as well as most books published.

• Identify the error in each sentence: For (A) such a demanding job, you (B) will need (C) qualifications, soft skills and (D) having full commitment.

• The effects of literacy often extend ................ personal benefits.

   

• In the 1840s, Joseph Henry made important discovery of electromagnetism.

• From the four words or phrases (A,B,C or D), choose the one that best completes the sentence.

   A: I think it’s going to rain again.

  B: It wouldn’t ……. me, it hasn’t stopped all week!

• When a reader reads an interesting book slowly and carefully, he ____ it

   

• There is special care for _____ sick and _______ elderly in this medical center. 

• The sun contains 99.9 percentage of the mass of the solar system.

• Some trees such as the Durian need to be burned periodically so that the seeds would open and germinate.

• It is becoming extremely difficult to grow enough to feed the world’s rapidly increased population.

• The message was often enhanced by a ............ drawing specifically to attract the attention of children.

• Most modern barns are both insulated, ventilated and equipped with electricity.

• Identify the error in each sentence: It is important that you turned off the heater every morning before you leave for class

• National forests including land for animal grazing, as well as wilderness areas with scenic mountains and lakes.

• Choose the underlined part that needs correction.

  Bella had better to change her study habits if she wants to be admitted to a good college.

• Choose the best answer:

  Next time we go ............., remember to ask the agent for clear directions.

• The H5N1 infected patients have to _______ others to prevent the virus from spreading