本课配套习题挑战模式2/5
单选题
难度系数:
2.若代数式有意义,则x的取值范围是( )
A: x>1且x≠2 |
B: x≥1 |
C: x≠2 |
D: x≥1且x≠2 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruS6jOasoeagueW8j+eahOaAp+i0qOWSjOWIhuW8j+eahOaEj+S5ie+8jOiiq+W8gOaWueaVsOWkp+S6juaIluetieS6jjDvvIzliIbmr43kuI3nrYnkuo4w77yM5bCx5Y+v5Lul5rGC6Kej
- 答案:RA==
PGRpdj7op6PvvJrnlLHliIblvI/lj4rkuozmrKHmoLnlvI/mnInmhI/kuYnnmoTmnaHku7blj6/lvpfvvJp4LTHiiaUw77yMeC0y4omgMO+8jOino+W+l++8mnjiiaUx77yMeOKJoDI8L2Rpdj4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.
式子有意义的 x 的取值范围是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5qC55o2u6KKr5byA5pa55pWw5aSn5LqO562J5LqOMO+8jOWIhuavjeS4jeetieS6jjDliJflvI/ov5vooYzorqHnrpfljbPlj6/lvpfop6M8L3A+
- 答案:QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.已知,则2xy的值为()
A: -15 |
B: 15 |
C: 13 |
D: 14 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOmmluWFiOagueaNruS6jOasoeagueW8j+acieaEj+S5ieeahOadoeS7tuaxguWHunjnmoTlgLzvvIznhLblkI7ku6PlhaXlvI/lrZDmsYLlh7p555qE5YC877yM5pyA5ZCO5rGC5Ye6Mnh555qE5YC8
- 答案:QQ==
PGRpdj7op6PvvJropoHkvb/mnInmhI/kuYkyeCYjODcyMjs14omlMO+8jDUmIzg3MjI7MnjiiaUw77yM6Kej5b6XeD0yLjXvvIx5PS0z5omA5LulMnh5PS0xNTwvZGl2Pg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.对于实数x,
A: 0 |
B: 2000 |
C: -2000 |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOeUseS6jOasoeagueW8j+eahOaAp+i0qO+8jOWPr+efpTIwMDAteOKJpTDvvIx4LTIwMDDiiaUw77yM5b6X5Ye6eD0yMDAw77yM5Luj5YWl5omA5rGC5Luj5pWw5byP77yM5Y2z5Y+v5rGC5Ye65YW25YC8
- 答案:RA==
PGRpdj7op6PvvJropoHkvb/miYDnu5nlvI/lrZDmnInmhI/kuYksIDIwMDAteOKJpTDvvIx4LTIwMDDiiaUw77yM5b6X5Ye6eD0yMDAwLOWOn+W8jz08aW1nIHdpZHRoPTMxIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzAwLzczL3JCQUNGRk1NV19taTY5YTVBQUFCVVg4WHVkYzAwMC5wbmciPjwvZGl2Pg==