What are common known as “lead” pencils are not lead, but  a mixture of graphite, clay and wax.

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

• Foreign students who are doing a decision about which school to attend  may not know exactly where choice are located.

• To receive a degree from an American university, onetake courses beside those in one’s major field.

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• My city stops flow of water, creating a reservoir and raise the flow of water.

• When there are low sales, companies often decide developing new products.

• Electric lamps came into widespread use during the early 1900’s and have replaced other type of fat gas, or oil lamps for almost  purpose

• The word  “scuba: is actually an acronym that comes of  words “self-contained underwater breathing apparatus”.

• They asked us, Henry and I, whether we thought that the  had been presented fairly and accurately

• Pele encourage Ronaldo to take part in2012 World cup

• Recently in the automobile industry, multinational companies have developed to the point where such few cars can be describe having been made entirely in one country.

• The hreat of being dismissed do not worry me any more because I have started my own busines

• The measurement known as “food” has originally based on the size of the human food.

• The surface conditions on Mars are the more similar with the Earth’s than those of nay other plane in solar system.

• Some methods to prevent erosion are plowing parallel with the slopes of hills, to plant trees on unproductive land, and rotating crops.

• Migration of animals be initiated by physiological stimuli such as reproductive changes, external pressures such as weather changes, or combination of either types of change

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

• He never drinks wine, _________?

• In a person’s lifetime, brain can store 100 trillion pieces of informations

• Scientists contributed to the development of television, whether no one can be said to have invented it.

• Many of the population in rural areas is composed of manual workers