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  • 1531人已做

    600

    【句子改错SC】-8478-OG16

    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.

  • 767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.

  • 1353人已做

    600

    【句子改错SC】-8480-OG16

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

  • 705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...

  • 1431人已做

    600

    【句子改错SC】-8482-OG16

    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.

  • 969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.

  • 1285人已做

    600

    【句子改错SC】-8484-OG16

    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.

  • 1443人已做

    650

    【句子改错SC】-8485-OG16

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

  • 933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.

  • 1293人已做

    650

    【句子改错SC】-8487-OG16

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

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  • 【句子改错SC】-8729

    The United States government employs a much larger proportion of women in trade negotiations than any government. &nb...

    1017人做过-1条评论-78.9%正确率

  • 【逻辑CR】-15275

    To improve the long-term savings rate of the citizens of Levaska, the country's legislature decided to implement a plan that allows investors to save up to $1,000 per year in specialaccounts witho...

    29人做过-1条评论-58.6%正确率

  • 【数据充分DS】-11639

    Six countries in a certain region sent a total of 75 representatives to an international congress, and no two&...

    182人做过-1条评论-63.2%正确率

  • 【句子改错SC】-8501

    The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing the Aramaic script&nbs...

    1448人做过-9条评论-44.1%正确率

  • 【句子改错SC】-10389

    Possible long-term consequences of the “greenhouse effect,” the gradual warming of the Earth’s climate, may include&nbs...

    428人做过-3条评论-45.1%正确率

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