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Even the smallest pulley can be done stronger by adding wheels to them system to create more leverage

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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

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  Polio, one of a group of spining inflammations, causes fever and paralysis often resulting in disabled and deformity.

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  Southern California, is known for its mild winters, has become the home for many senior citizens escaping Northern winters.

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  Drying food by means of solar energy is a ancient process applied wherever food and climatetic conditions make it possible.

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  Located in Canada, the Columbia Ice field covers an 120 square miles and is 3,30 feet thick some places .

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  The ozone layer must be protected because it shields the Earth from excessive violet radiations.

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  It has been found that length light or dark periods influence certain activities of flowering plants .

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  Nylon, a synthetic done from a combination of water, air and by product the coal, was first introduced in 1938.

• _____ no money would be wasted, we will use energy more efficiently.

   

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  To the men whowho worked so hard on the project, the news was profound disappointing.

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  Only averaged 5 feet above sea level, the Marshall Islands would disappear under Pacific should the Arctic icepack melt.

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  Mary found it hard to concentrate on her work because having noise .

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  I found it difficult convincing the ticket inspector that I had lost my ticket, but he believed me till the end

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  Harry lastly appeared in the role of King Lear at the Nationally Theatre.

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  Many of the population in the rural areas is composed of manually workers

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  In spite of physician handicaps, Helen Keller graduated from Radcliffe with honors.

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

  I suggest that Peter ____ the directions carefully before assembling the bicycle.

• He became interested in_________  when he started taking pictures for the local newspaper.

     

• Depending on many factors, including climate, mineral content of the soil, and the permanency of surface water, wetlands may be moss, gras, or covering with shrubs or trees.

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  The environment can be defined as all living and nonliving items in an area at specify time.