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  • The United States has the most extensive and developed healthcare system in the world.

    The United States has the most extensive and developed healthcare system in the world.
    2024/08/16
    The United States has the most extensive and developed healthcare system in the world.
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    5 分
  • The U.S. has the largest and most developed financial markets.

    The U.S. has the largest and most developed financial markets.
    2024/08/16
    The U.S. has the largest and most developed financial markets.
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    6 分
  • The U.S. has the most extensive and developed public transportation systems.

    The U.S. has the most extensive and developed public transportation systems.
    2024/08/16
    The U.S. has the most extensive and developed public transportation systems.
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    5 分
  • The United States has the highest number of mobile phone users.

    The United States has the highest number of mobile phone users.
    2024/08/16
    The United States has the highest number of mobile phone users.
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    5 分
  • The U.S. is the largest producer of ethanol.

    The U.S. is the largest producer of ethanol.
    2024/08/16
    The U.S. is the largest producer of ethanol.
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    6 分
  • The United States has the most extensive system of national parks.

    The United States has the most extensive system of national parks.
    2024/08/16
    The United States has the most extensive system of national parks.
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    5 分
  • The U.S. has the highest number of research and development spending.

    The U.S. has the highest number of research and development spending.
    2024/08/16
    The U.S. has the highest number of research and development spending.
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    5 分
  • The United States is a leading innovator in renewable energy technologies.

    The United States is a leading innovator in renewable energy technologies.
    2024/08/16
    The United States is a leading innovator in renewable energy technologies.
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    6 分