8. 在中,为边上一点,且,,则过点,以为焦点的双曲线的离心率为( ).
7.若是常数,则“且”是“对任意,都有”的( )条件.
充分不必要 必要不充分 充要 既不充分又不必要
6.已知,若向区域上随机投一点,则点落在区域的概率为( ) .
5.在平面直角坐标系中,已知直线的参数方程为(为参数),以直角坐标原点为极点,轴的正半轴为极轴建立相应的极坐标系,在此极坐标系中,若圆的极坐标方程为,则圆心到直线的距离为( ).
4.某试验有3个因素,4个水平,全部安排试验的个数为( ).
3. 设为虚数单位,则的展开式中的第三项为( ).
[
2.设,函数的定义域为,则( ).
1.已知为等差数列,,则等于( ).
第二节:书面表达(满分25分)
假定你是李华,准备参加学校举办的主题为“健康成长”的英语作文比赛。请按照要求写一篇短文,主要内容包括:
1.乐观的人生态度; 2.努力学习; 3. 参加体育锻炼。
注意:1. 词数100左右; 2.可以适当增加细节,使行文连贯;3.开头已经给出
We all want to grow up happily and healthily, and for this goal we must do several things. ________________________________________________________________
第一节:短文改错(共10小题;每小题1分,满分10分)
If someone asks you how you can make you always |
76. ________ |
happy, you will perhaps find rather
difficult to give him |
77. ________ |
a proper answer.Did you remember the old saying“No |
78. ________ |
human being can really happy who is not
giving or trying |
79. ________ |
to give happiness to others”? If you will
always think of |
80. ________ |
taking more from others and give them
less,you won’t be |
81. ________ |
able to have happiness in your life even
you are very rich. |
82. ________ |
Here’s an article for you. If each of you
follow it, there |
83. ________ |
will be all end of many unhappy days of
yours.So you should |
84. ________ |
learn to give up your own interests when
necessarily to do so. |
85. ________ |
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