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      rg2021-01-07 09:24:28 ԇӢZ ҪͶ

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      1 . Insgroupsto remain in existence, a profit-making organization must, in the long run, produce something consumers consider useful or desirable.

      2 . The greater the population there is in a locality, the greater the need there is for water, transportation, and disposal of refuse.

      3 . It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscure one’s meaning.

      4 . With modern offices becoming more mechanized, designers are attempting to personalize them with warmer, less severe interiors.

      5 . Typical of the grassland dwellers of the continent is the American antelope, or pronghorn.

      6 . Of the millions who saw Haley’s comet in , how many people will live long enough to see it return in the twenty-first century.

      7 . Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.

      8 . Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.

      9 . The difference between libel and slander is that libel is printed while slander is spoken.

      10 . The knee is the jointswheresthe thigh bone meets the large bone of the lower leg.

      11 . Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red.

      12 . Billie Holiday’s reputation as a great jazz-blues singer rests on her ability to give emotional depth to her songs.

      13 . Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.

      14 . Fungi are important in the process of decay, which returns ingredients to the soil, enhances soil fertility, and decomposes animal debris.

      15 . When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.

      16 . Although pecans are most plentiful in the southeastern part of the United States, they are found as far north as Ohio and Illinois.

      17 . Essentially, a theory is an abstract, symbolic representation of what is conceived to be reality.

      18 . Long before children are able to speak or understand a language, they communicate through facial expressions and by making noises.

      19 . Thanks to modern irrigation, crops now grow abundantly in areasswheresonce nothing but cacti and sagebrush could live.

      20 . The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them.

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