• 2022-06-07
    [img src="http://edu-image.nosdn.127.net/C2E222B9B69051B791D85D50DD8FFB80.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]
    A: -1
    B: 1
    C: 2
    D: 0
  • 举一反三