本课配套习题挑战模式1/5
单选题
难度系数:
1.在实数0、π、、、-中,无理数的个数有( )
A: 1个 |
B: 2个 |
C: 3个 |
D: 4个 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5peg55CG5pWw5piv5peg6ZmQ5LiN5b6q546v5bCP5pWw77yM5Y+v5b6X562U5qGI77yO
- 答案:Qg==
6Kej77yaz4DvvIw8aW1nIHdpZHRoPTE5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzkxLzk4L3JCQUNKbFdiZlFyajQxN3VBQUFCZTMxX1dlRTIzNy5wbmciPuaYr+aXoOeQhuaVsO+8jDxicj7mlYXpgInvvJpC77yO
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图,数轴上的A、B、C、D四点中,与数-表示的点最接近的是( )
A: A |
B: B |
C: C |
D: D |
一次做对,真牛!
+5奖励规则>
- 提示1:5YWI5Lyw566X5Ye6PGltZyB3aWR0aD0xOSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DNy85MS9yQkFDRTFXYmZmYnc3YWxMQUFBQmJuNklHNUUyMTQucG5nIj7iiYgxLjczMu+8jOaJgOS7pS08aW1nIHdpZHRoPTE5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0M3LzkxL3JCQUNFMVdiZmZidzdhbExBQUFCYm42SUc1RTIxNC5wbmciPuKJiC0xLjczMu+8jOagueaNrueCuUHjgIFC44CBQ+OAgUTooajnpLrnmoTmlbDliIbliKvkuLotM+OAgS0y44CBLTHjgIEy77yM5Y2z5Y+v6Kej562U77yO
- 答案:Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.实数a,b,c,d在数轴上的对应点的位置如图所示,这四个数中,绝对值最大的是( )
A: a |
B: b |
C: c |
D: d |
一次做对,真牛!
+5奖励规则>
- 提示1:6aaW5YWI5qC55o2u5pWw6L2055qE54m55b6B77yM5Lul5Y+K57ud5a+55YC855qE5ZCr5LmJ5ZKM5oCn6LSo77yM5Yik5pat5Ye65a6e5pWwYe+8jGLvvIxj77yMZOeahOe7neWvueWAvOeahOWPluWAvOiMg+WbtO+8jOeEtuWQjuavlOi+g+Wkp+Wwj++8jOWIpOaWreWHuui/meWbm+S4quaVsOS4re+8jOe7neWvueWAvOacgOWkp+eahOaYr+WTquS4quaVsOWNs+WPr++8jg==
- 答案:QQ==
6Kej77ya5qC55o2u5Zu+56S677yM5Y+v5b6XPGJyPjPvvJx8YXzvvJw077yMMe+8nHxifO+8nDLvvIww77ycfGN877ycMe+8jDLvvJx8ZHzvvJwz77yMPGJyPuaJgOS7pei/meWbm+S4quaVsOS4re+8jOe7neWvueWAvOacgOWkp+eahOaYr2HvvI48YnI+5pWF6YCJ77yaQe+8jg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.在下列语句中:
①无理数的相反数是无理数;
②一个数的绝对值一定是非负数;
③有理数比无理数小;
④无限小数不一定是无理数.
其中正确的是( )
①无理数的相反数是无理数;
②一个数的绝对值一定是非负数;
③有理数比无理数小;
④无限小数不一定是无理数.
其中正确的是( )
A: ②③ |
B: ②③④ |
C: ①②④ |
D: ②④ |
一次做对,真牛!
+5奖励规则>
- 提示1:4pGgIOenjeivtOazleaYr+ato+ehrueahO+8jOWboOS4uuWunuaVsOWMheaLrOacieeQhuaVsOWSjOaXoOeQhuaVsO+8jOaXoOeQhuaVsOeahOebuOWPjeaVsCDkuI3lj6/og73lvI/mnInnkIbmlbDvvJsg
- 提示2:4pGhIOS4quaVsOeahOe7neWvueWAvOS4gOWumuKJpTDvvIzmlYXov5nnp43or7Tms5XmmK/mraPnoa7nmoTvvJsg
- 提示3:4pGiIOeahOWkp+Wwj++8jOWSjOWug+aYr+acieeQhuaVsOi/mOaYr+aXoOeQhuaVsOaXoOWFs++8jOaVheacrOmAiemhueaYr+mUmeivr+eahO+8myA=
- 提示4:4pGjIOmZkOW+queOr+Wwj+aVsOaYr+acieeQhuaVsO+8jOaVheacrOmAiemhuemUmeivr++8jg==
- 答案:Qw==
6Kej77ya4pGg5Zug5Li65a6e5pWw5YyF5ous5pyJ55CG5pWw5ZKM5peg55CG5pWw77yM5peg55CG5pWw55qE55u45Y+N5pWw5LiN5Y+v6IO95byP5pyJ55CG5pWw77yM5pWF5pys6YCJ6aG55q2j56Gu77ybPGJyPuKRoeS4gOS4quaVsOeahOe7neWvueWAvOS4gOWumuKJpTDvvIzmlYXmnKzpgInpobnmraPnoa7vvJs8YnI+4pGi5pWw55qE5aSn5bCP77yM5ZKM5a6D5piv5pyJ55CG5pWw6L+Y5piv5peg55CG5pWw5peg5YWz77yM5pWF5pys6YCJ6aG55piv6ZSZ6K+v55qE77ybPGJyPuKRo+aXoOmZkOW+queOr+Wwj+aVsOaYr+acieeQhuaVsO+8jOaVheacrOmAiemhueato+ehru+8jjxicj7mlYXpgIlD77yO
本课配套习题挑战模式5/5
单选题
难度系数:
5.已知a=2-,b=+2,则a、b的关系为( )
A: 相等 |
B: 互为相反数 |
C: 互为倒数 |
D: 互为负倒数 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5LmY56ev5Li6MeeahOS4pOS4quaVsOS6kuS4uuWAkuaVsO+8jOWPr+W+l+etlOahiO+8jg==
- 答案:Qw==
6Kej77ya77yIMi08aW1nIHdpZHRoPTE3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzkxLzk4L3JCQUNKbFdiZmRLVE1ZYU1BQUFCWkNiSER4dzY3Mi5wbmciPu+8ie+8iDxpbWcgd2lkdGg9MTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTEvOTgvckJBQ0psV2JmZEtUTVlhTUFBQUJaQ2JIRHh3NjcyLnBuZyI+KzLvvIk9Me+8jOaVhWHjgIFi5LqS5Li65YCS5pWw77yMPGJyPuaVhemAie+8mkPvvI4=