中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.若函数y=mx2+（m+2）x+
m+1的图象与x轴只有一个交点，那么m的值为（ ）
m+1的图象与x轴只有一个交点，那么m的值为（ ） | A: 0 |
| B: 0或2 |
| C: 2或-2 |
| D: 0、2或-2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIhuS4uuS4pOenjeaDheWGte+8muWHveaVsOaYr+S6jOasoeWHveaVsO+8jOWHveaVsOaYr+S4gOasoeWHveaVsO+8jOaxguWHuuWNs+WPry4=
- 答案：RA==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.如图，已知二次函数y=-x2+2x，当-1＜x＜a时，y随x的增大而增大，则实数a的取值范围是（ ）
| A: a＞1 |
| B: -1＜a≤1 |
| C: a＞0 |
| D: -1＜a＜2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWFiOaxguWHuuS6jOasoeWHveaVsOeahOWvueensOi9tO+8jOWGjeagueaNruS6jOasoeWHveaVsOeahOWinuWHj+aAp+WIl+W8j+WNs+WPry4=
- 答案：Qg==
6Kej77ya5LqM5qyh5Ye95pWweT0teDxzdXA+Mjwvc3VwPisyeOeahOWvueensOi9tOS4uuebtOe6v3g9Me+8jDxicj7iiLUtMe+8nHjvvJxh5pe277yMeemaj3jnmoTlop7lpKfogIzlop7lpKfvvIw8YnI+4oi0YeKJpDHvvIw8YnI+4oi0LTHvvJxh4omkMS4gPGJyPuaVhemAiUIuIA==
本课配套习题挑战模式3/5
单选题
难度系数：
3.二次函数y=x2+bx的图象如图，对称轴为直线x=1，若关于x的一元二次方程x2+bx-t=0（t为实数）在-1＜x＜4的范围内有解，则t的取值范围是（ ）
| A: t≥-1 |
| B: -1≤t＜3 |
| C: -1＜t＜8 |
| D: 3＜t＜8 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOagueaNruWvueensOi9tOaxguWHumLnmoTlgLzvvIzku47ogIzlvpfliLB4PS0x44CBNOaXtueahOWHveaVsOWAvO+8jOWGjeagueaNruS4gOWFg+S6jOasoeaWueeoi3g8c3VwPjI8L3N1cD4rYngtdD0w77yIdOS4uuWunuaVsO+8ieWcqC0x77yceO+8nDTnmoTojIPlm7TlhoXmnInop6Pnm7jlvZPkuo55PXg8c3VwPjI8L3N1cD4rYnjkuI55PXTlnKh455qE6IyD5Zu05YaF5pyJ5Lqk54K56Kej562U
- 答案：Qw==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.如图，抛物线y=ax2+bx+c与x轴交于点A（-1，0），顶点坐标为C（1，k），与y轴的交点在（0，2）、（0，3）之间（不包含端点），则k的取值范围是（ ）
| A: 2＜k＜3 |
B:  ＜k＜4 |
C:  ＜k＜4 |
| D: 3＜k＜4 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOmmluWFiOaKiumhtueCueWdkOagh+S7o+WFpeWHveaVsOino+aekOW8j+W+l+WIsGs9YStiK2M9PGltZyB3aWR0aD02IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzlFL0FEL3JCQUNFMVBlXzNmek5ueUxBQUFCTUZ0MzRhVTc4MC5wbmciPmPvvIzliKnnlKhj55qE5Y+W5YC86IyD5Zu05Y+v5Lul5rGC5b6Xa+eahOWPluWAvOiMg+WbtC4=
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.如图，二次函数y=ax2+bx+c的图象经过点（0，-2），与x轴交点的横坐标分别为x1，x2，且-1＜x1＜0，1＜x2＜2，下列结论正确的是（ ）
| A: a＜0 |
| B: a-b+c＜0 |
C:  ＞1 |
| D: 4ac-b2＜-8a |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUseW8gOWPo+aWueWQke+8jOWPr+ehruWummHvvJ4w77yb
- 提示2：IOeUseW9k3g9LTHml7bvvIx5PWEtYitj77yeMO+8jOWPr+ehruWumkLplJnor6/vvJs=
- 答案：RA==
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
