5.已知某校的初中学生人数、高中学生人数、教师人数之比为20:15:2,若教师人数为120人,现在用分层抽样的方法从所有师生中抽取一个容量为N的样本进行调查,若应从高中学生中抽取60人,则N= 。
4. 已知等比数列
的前3项依次为
则
。
3.已知虚数z满足等式:
,则
2.已知抛物线
的准线与双曲线
的左准线重合,则抛物线的焦点坐标为
.
1.
设集合M= {x|x─
<0},N={x|2x+l>0},则M∩N=
·
第二节:书面表达 (满分25分)
假如你是李华,最近,你班同学就中学生是否可以带手机上学进行了讨论。 请你根据下列信息,给校长写一封信,客观地介绍你班讨论的情况
|
70%的学生认为 |
30%的学生认为 |
|
1. 没有必要带手机。 2.带手机会分散学习精力,上课开机影响极坏。 3. 学生用手机会增加家长经济负担。 |
1.学生可以带手机上学,但上课要关机。 2.学生带手机可以方便联系。 3.信息时代的交流工具,不应禁止 |
1.词数:100字左右
2.经济负担economic burdens.
3.信的开头已经为你写好
Dear principle,
I’m writing to tell you about the discussion we’ve had about whether a mobile phone should be brought to school.
第一节:语篇填空(共10小题;每小题1分,满分10分)
Ladies and gentlemen:
Welcome to our class and to our evening party. Here we
feel greatly _____ (荣幸) to have a good chance to be with you. 76.________
First of all, let me say a few words a____ our class. There are 77.________
45 students in our class. 32 of us are boys, ___ the rest are 78.________
girls. Most of us are studying English, and we_____(通常)spend 79.________
much time on it. We often read English______(杂志),newspapers 80.________
and watch English programs on TV in our spare time. We are ________(决心) 81. _______
to learn English well so ____ to have a better job in the future. 82.________
In our program tonight, t___ are cross talks, short plays, group singing, 83.________
popular songs and so on. I hope you will enjoy them and ____ a good time. 84.________
And of c______ your participation would be appreciated. 85.________
Thank you.
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