1、班级群每月都举行评奖活动，满分为100分，刷题记录、晨读材料、群邮件的权重分别为0.5、0.3、0.2。已知同一班的小花和小卯晨读材料和群邮件的评分均相同，刷题记录的评分比为10：9，已知小花最终总分92分，则小卯的总分最低为多少：
A.87
B.86
C.82
D.77
2、小王在七点半出门上班，7：50到达路程中点，发现遗漏了一份文件在家，需要提高速度回家取文件再上班。若公司上班时间为8:30，那小王的速度至少需要提高多少才能保证不迟到：
A.20%
B.50%
C.80%
D.100%
3、某游乐园组织了一次闯关游戏，共设计5个关卡，每闯过一个关卡的得分相同（得分都为整数）。已知某日有4位挑战者进入闯关游戏决赛，他们的最终得分互不相等，且构成一个等差数列，经最终计算4位挑战者的总分为126分，则分数最高的挑战者最终得到（）分。
A.55
B.45
C.42
D.32
4、图中所示，已知正方形的边长为2，问阴影面积与空白面积的面积比为多少：
5、有红、黄、蓝三种颜色的木棍各四根，所有木棍的长度都是整数厘米，且同一颜色的木棍长度也相同。已知用两红两黄、两红两蓝和两黄两蓝的木棍拼成的长方形的面积分别为91、143和77平方厘米。问蓝色木棍的长度是多少厘米：
A.11
B.13
C.8
D.7
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