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    680

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    In a review of 2,000 studies of human behavior that date back to the 1940s, two Swiss psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size, none could be taken seriously.

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    600

    【句子改错SC】-8458-OG16

    Manufacturers rate batteries in watt-hours; if they rate the watt-hour higher, the longer the battery can be expected to last.

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    650

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    Although a surge in retail sales have raised hopes that there is a recovery finally under way, many economists say that without a large amount of spending the recovery might not last.

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    600

    【句子改错SC】-8460-OG16

    Although a surge in retail sales have raised hopes that there is a recovery finally under way, many economists say that without a large amount of spending the recovery might not last.

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    600

    【句子改错SC】-8461-OG16

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    650

    【句子改错SC】-8462-OG16

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    600

    【句子改错SC】-8463-OG16

    Diabetes, together with its serious complications, ranks as the nation’s third leading cause of death, surpassed only by heart disease and cancer.

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    650

    【句子改错SC】-8464-OG16

    The intricate structure of the compound insect eye, having hundreds of miniature eyes called ommatidia, help explain why scientists have assumed that it evolved independently of the vertebrate eye.

  • 1067人已做

    650

    【句子改错SC】-8465-OG16

    In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing and fungus was growing on the walls.

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    650

    【句子改错SC】-8466-OG16

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