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  • 913人已做

    600

    【句子改错SC】-8478-OG15

    Warning that computers in the United States are not secure, the National Academy of Sciences has urged the nation to revamp computer security procedures, institute new emergency response teams, creating a special nongovernment organization to take charge of computer security planning.

  • 547人已做

    650

    【句子改错SC】-8479-PREP07

    Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendants, popularly known as killer bees, had migrated as far north as southern Texas.

  • 832人已做

    600

    【句子改错SC】-8480-OG15

    A pioneer journalist, Nellie Bly’s exploits included circling the globe faster than Jules Verne’s fictional Phileas Fogg.

  • 493人已做

    650

    【句子改错SC】-8481-PREP07

    Nikola Tesla, the inventor of alternating current, because he was excited with the prospects of harnessing Niagara Falls for producing electric power, he predicted in the mid-1890's that electricity generated at Niagara would one day power the streetcars of London and the streetlights of P...

  • 878人已做

    600

    【句子改错SC】-8482-OG15

    Retail sales rose 0.8 of 1 percent in August, intensifying expectations that personal spending in the July–September quarter more than doubled that of the 1.4 percent growth rate in personal spending for the previous quarter.

  • 598人已做

    600

    【句子改错SC】-8483-PREP07

    The airline company, following through on recent warnings that it might start reducing service, announced that it was eliminating jet service to nine cities, closing some unneeded operations, and it grounded twenty-two planes.

  • 792人已做

    600

    【句子改错SC】-8484-OG15

    The commission has directed advertisers to restrict the use of the word “natural” to foods that do not contain color or flavor additives, chemical preservatives, or nothing that has been synthesized.

  • 877人已做

    650

    【句子改错SC】-8485-OG15

    Plants are more efficient at acquiring carbon than are fungi, in the form of carbon dioxide, and converting it to energy-rich sugars.

  • 644人已做

    650

    【句子改错SC】-8486-PREP07

    The list of animals that exhibits a preference of either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include the lower vertebrates.

  • 805人已做

    650

    【句子改错SC】-8487-OG15

    The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting.

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最新被解答
  • 【问题求解PS】-14483

    An amusement park currently charges the same price for each ticket of admission. If the current price of admis...

    19人做过-1条评论-78.9%正确率

  • 【句子改错SC】-8751

    Over 75 percent of the energy produced in France derives from nuclear power, while in Germany it is just ...

    625人做过-3条评论-37.4%正确率

  • 【逻辑CR】-8780

    The amount of time it takes for most of a worker's occupational knowledge and skills to become obsolete ha...

    458人做过-1条评论-62.7%正确率

  • 【逻辑CR】-10333

    Which of the following most logically completes the argument below?According to promotional material published by the ci...

    279人做过-1条评论-57.3%正确率

  • 【数据充分DS】-12252

    The cost of each adult's ticket for a certain concert was $30, and the cost of each child's ticket for the concert was $24. If Hannah purchased tickets for this concert, what was the average (...

    155人做过-2条评论-61.9%正确率

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