For thousands of years, people have used some kind of refrigeration cooling beverages and preserve edibles

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• Commercial letters of credit are often used to financing expor trade, but they can have other uses.

• The medical problems of parents and their children tend to be very similar to because of the hereditary nature of many diseases.

• The bell signaling the end of the first period rang loud, interrupting the professor’s closing comments

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• Those of us who have a family history of heart disease should make yearly appointments with their doctors.

• Generally speaking, a magnitude 1.0 earthquake on the Richter scale is detected by instruments but not by person.

• New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture.

• A coral reef, a intricate aquatic community of plants and animals, is found only in warm, shallow, sunlight seas

• In pools, goldfish are not just ornamental; since they feed on mosquito larva, they are also benefit.

• Despite its smaller size, the Indian Ocean is as deep the Atlantic Ocean.

• Being the biggest expanse of brackish water in the world, the Baltic Sea is one of special interesting to scientists.

• It’s been brought to my attention that there has been a number of thefts from the office.

• Australian koalas are furry, gray animal that live in trees and feed on leaves.

• Jeff wouldn’t have bumped into the waitress if he ____ in such a hurry. 

• What did you eat for........... breakfast this morning. 

• Rice is most important plant in Viet Nam

• Some bacteria are extremely harmful, but anothers are regularly used in producing cheeses, crackers, and many other foods.

• To save the California condor from extinction, a group of federal, local, and privately organizations initiated a rescue program.

• Rita plays .......... violin and her sister plays .......... guitar. 

• The campaign will hopefully ensure the survival ...... the tiger.

• Men and women in the Peace Coips work with people in developing countries to help them improving the living conditions