Trắc nghiệm: It was not until the end of prehistoric times that the first wheeled vehicles appearing.,It was not until the end of prehistoric times that the first wheeled vehicles appearing.,It was not until the end of prehistoric times that the first wheeled vehicles appearing.,It was not until the end of prehistoric times that the first wheeled vehicles appearing .,It was not until the end of prehistoric times that the first wheeled vehicles appearing .,It was not until the end of prehistoric times that the first wheeled vehicles appearing.