本课配套习题挑战模式1/5

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单选题
难度系数:

1.若a>b,则下列式子正确的是(  )
A: -4a>-4b
B:
C: 4-a>4-b
D: a-4>b-4
  • 提示15qC55o2u5LiN562J5byP55qE5oCn6LSo77yI4pGg5LiN562J5byP55qE5Lik6L656YO95Yqg5LiK5oiW5YeP5Y675ZCM5LiA5Liq5pWw5oiW5pW05byP77yM5LiN562J5Y+355qE5pa55ZCR5LiN5Y+Y77yM4pGh5LiN562J5byP55qE5Lik6L656YO95LmY5Lul5oiW6Zmk5Lul5ZCM5LiA5Liq5q2j5pWw77yM5LiN562J5Y+355qE5pa55ZCR5LiN5Y+Y77yM4pGi5LiN562J5byP55qE5Lik6L656YO95LmY5Lul5oiW6Zmk5Lul5ZCM5LiA5Liq6LSf5pWw77yM5LiN562J5Y+355qE5pa55ZCR5pS55Y+Y77yJ6YCQ5Liq5Yik5pat5Y2z5Y+v77yO