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Today’s nuclear fission fuels are the remnants of which used to be a much more active mixture of radioactive and fissionable materials two billion years ago and maybe earlier.

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When Ke visited Alaska, he lived in a igloo in the winter months as well as in spring.

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Some jellyfish make daily journeys at deep water the surface and back, while others migrate horizontal .

Choose the correct answer to complete the sentence. "We are totally exhausted after having finished successive _____ in only a day."

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Before she moved here, Arlene had been president of organization since four years.

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Most types of dolphins live less twenty-five years, and some species may reach 50 years of age 

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Philosophy, the inquiry into the nature of human knowledge, it is still a famous subject among university students

Error Identification.

Since (A) I begin (B) school, I haven't had (C) much (D) spare time.

Choose the word or phrase with the same meaning as the underlined part.

Each nation has many people who voluntarily take care of others.

To attract the guests’ attentions at the party, a polite MC on first appearance may say.......

Choose the correct answer to complete the sentence. " In spite of poverty and dreadful conditions, we still manage to keep our _________."

It is _____ three o'clock; it is nearly a quarter past three. 

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More than  10,000 years ago, glaciers moved (across the Minnesota region four time, leveling most of land.

Choose the correct answer. "Phuong reviewed the lessons carefully;______ she could finish the test very well."

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The early periods of aviation in the United States was marked by exhibition flights made by individual fliers or by teams of performers  in a lot country fairs.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence which is closest in meaning to the original one.

People believe that he is a kind doctor.

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“How does human brain work?” remains one of the most profound questions confront modern Science.

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She hardly never misses an opportunity to play in the tennis tournaments.

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Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for some wines and brandies.

I did not have enough lexical knowledge to________  that article from Vietnamese into English.

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A coral reef, a intrication aquatic community of plants and animals, is found only with warm, shallow, sunlight seas .