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When a pearl is cut in half and examined under a microscope, but many layers can be seen.

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Bacteria are responsible of a lot of the textures and flavors in food and are particular important in milk products.

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Since rats are destructive and can carry diseases, therefore many cities try to exterminate them

There's nothing _____ exercises for making you warm. 

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

Those audiences ____ show their tickets before entering the concert hall.

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Halifax is largest city and chief port of Nova Scotia and is eastern terminus of Canada’s two great railway systems.

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Abraham Lincolns boyhood home resembled those of many others midwestern pioneers, with its dirt floor, sleeping loft, and evil fireplace.

Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.

The ASEAN Security Community (ASC)aims to ensure that countries in the region live at ………with one another and in a democratic and harmonious environment.

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The refugees are very much upset because they have been deprived from their homeland and their families.

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In about psychologists have devoted less research to learning than to any other topic.

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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.

We suggest that she ____ the 10.30 train immediately.

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We are not allowed to enter this construction site. Block of flats is being built here and it is dangerous to walk because you may get hurt by a fallen brick some other objects

Choose the correct answer to complete the sentence. "Some schools encourage _____ and free thinking so children can study art, music and gardening as well as science and history. "

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After a while, track we have been following became thick underground .

Almost all the tourists are really ………………… by the beauty of Hue.

This is the first time I _________such a famous person.

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Young people are thought to be the future leaders of the country, and it is important that they should understand their heritage as full as possible.

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The symptoms of diabetes in the early stages are too slight that people may not notice them

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From 1905 to 1920, American novelist Edith Wharton was at the top her writing career, publishing of her three most famous novels.

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A great aviation pioneer avat, Amelia Earhart was already famous when she sets out on her ill-fated attempt to circle the global in 1937’s