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(本小题满分12分) 某校高三数学竞赛初赛考试后,对90分以上(含90分)的成绩进行统计,其频率分布直方图如图所示.若130~140分数段的人数为2人. (Ⅰ)估计这所学校成绩在90~140分之间学生的参赛人数; (Ⅱ)现根据初赛成绩从第一组和第五组(从低分段到高分段依次为第一组、第二组、…、第五组)中任意选出两人,形成帮扶学习小组.若选出的两人成绩之差大于20,则称这两人为“黄金搭档组”,试求选出的两人为“黄金搭档组”的概率.
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【多选题】党章规定,党的各级纪律检查委员会的职责是___。
A.
监督
B.
执纪
C.
问责
【单选题】商务总结正文内容不包括()。
A.
具体工作方案
B.
成绩和经验
C.
今后工作和努力的方向
D.
问题与教训
【单选题】关于翼状胬肉的手术适应症,何者不对( )
A.
胬肉遮盖部分或全部瞳孔
B.
胬肉有碍美观
C.
胬肉妨碍眼球运动
D.
做白内障或角膜移植术前
E.
静止期胬肉
【单选题】By saying' Stratford cries poor traditionally'(Line 2, Paragraph 4), the author implies that ______ .
A.
Stratford cannot afford the expansion projects
B.
Stratford has long been in financial difficulties
C.
the town is not really short of money
D.
the townsfolk used to be poorly paid
【多选题】党章规定,党的各级纪律检查委员会的职责是___。()
A.
监督
B.
审判
C.
执纪
D.
问责
【单选题】By saying 'their comparative immunity to the attractions of toil'(Line 4, Paragraph 3), the author means
A.
Britons are healthy enough not to feel ill.
B.
Britons have good immune system.
C.
Britons are not keen on work.
D.
Britons are afraid of hard work.
【简答题】党章规定,党的各级纪律检查委员会的职责是 。
【单选题】By saying 'This is no flash in the pan' (Paragraph 3, Line 6), the author implies that
A.
the low inflation rate will continue
B.
the inflation rate will rise again
C.
inflation will disappear entirely
D.
there is no inflation at present
【简答题】Choose the words or expressions and complete the passage There is a saying in England which goes; ‘the rain in Spain(西班牙. falls mainly on the plain’. I can tell you now that it is a . The rain in Spai...
【单选题】若刚绘制了一个多线段对象,想撤销该图形的绘制,下面哪个操作是错误的?()
A.
点击CTRL+Z
B.
按ESC键
C.
通过输入命令U
D.
在命令行输入UNDO
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