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  • 1116人已做

    680

    【句子改错SC】-8519-OG16

    Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries.

  • 636人已做

    600

    【句子改错SC】-8520-PREP07

    The company announced that its profits declined much less in the second quarter than analysts had expected it to and its business will improve in the second half of the year.

  • 1085人已做

    650

    【句子改错SC】-8521-OG16

    The Organization of Petroleum Exporting Countries (OPEC) had long been expected to announce a reduction in output to bolster sagging oil prices, but officials of the organization just recently announced that the group will pare daily production by 1.5 million barrels by the beginning of ne...

  • 572人已做

    600

    【句子改错SC】-8522-PREP07

    While they remove carbon dioxide from the air, conserve soil and water, and house thousands of species, forests also supply potentially valuable pharmaceuticals, and, as sources of building material and firewood, that provide employment for millions worldwide.

  • 1241人已做

    600

    【句子改错SC】-8523-OG16

    In 1850, Lucretia Mott published her Discourse on Women, arguing in a treatise for women to have equal political and legal rights and for changes in the married women’s property laws.

  • 828人已做

    650

    【句子改错SC】-8524-OG16

    Laos has a land area about the same as Great Britain but only four million in population, where many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.

  • 689人已做

    600

    【句子改错SC】-8525-PREP07

    Employment costs rose 2.8 percent in the 12 months that ended in September, slightly less than they did in the year that ended in the previous quarter.

  • 826人已做

    650

    【句子改错SC】-8526-OG16

    To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

  • 913人已做

    700

    【句子改错SC】-8527-PREP07

    Often incorrectly referred to as a tidal wave, a tsunami, a seismic sea wave that can reach up to 150 miles per hour in speed and 200 feet high, is caused by underwater earthquakes or volcanic eruptions.

  • 716人已做

    600

    【句子改错SC】-8528-OG16

    The plot of The Bostonians centers on the rivalry between Olive Chancellor, an active feminist, with her charming and cynical cousin, Basil Ransom, when they find themselves drawn to the same radiant young woman whose talent for public speaking has won her an ardent following.

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  • 【逻辑CR】-10342

    A prominent investor who holds a large stake in the Burton Tool Company has recently claimed that the company&...

    320人做过-5条评论-47.2%正确率

  • 【问题求解PS】-9381

    For any positive integer n, the sum of the first n positive integers equals n(n+1)/2 . What is the sum&nb...

    222人做过-2条评论-72.5%正确率

  • 【问题求解PS】-12423

    A certain law firm consists of 4 senior partners and 6 junior partners.  How many different groups of 3&n...

    82人做过-3条评论-67.1%正确率

  • 【句子改错SC】-8556

    Rivaling the pyramids of Egypt or even the ancient cities of the Maya as an achievement, the army of terr...

    745人做过-2条评论-66.7%正确率

  • 【句子改错SC】-8475

    A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be&...

    1136人做过-2条评论-70.6%正确率

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