5. 两个事件对立是两个事件互斥的( )
A.充分非必要条件 B.必要非充分条件
C.充要条件 D.既不充分又不必要条件
4.有以下四个命题,其中真命题的个数有( )
①“若,则互为倒数”的逆命题;
②“相似三角形的周长相等”的否命题;
③“若,则方程有实根”的逆否命题;
④“若,则”的逆否命题.
A.①② B.②③ C.①③ D.③④
3. 现有五个球分别记为A,B,C,D,E,随机放进三个盒子,每个盒子只能放一个球,则D或E不在盒中的概率是( )
A. B. C. D.
2.如果方程表示焦点在轴上的椭圆,那么实数的取值范围是
A. B. C. D.
1. “”是“”的 ( )
A.充分不必要条件 B.必要不充分条件
C.充分必要条件 D.既不充分也不必要条件
第二节:书面表达(满分30分)(注意卷面整洁)
当今社会,有些家长由于忙于工作无暇顾及孩子,从而选择用金钱的方式奖励孩子在学习上的进步和成就。请你用英语写一篇120词左右的短文分析产生这种现象的原因并表达你的看法。
……
第一节:短文改错(共10小题;每小题1分,满分10分。)
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加:在缺词处加一个漏字符号(∧),并在其下面写上该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写上修改后的词。
注意:1.每处错误及其修改均仅限一词;
2.只允许修改10处,多者(从11处起)不计分。
例如: It was very nice to get your invitation to spend ∧ weekend with you. Luckily the I was completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8 p.m. are in Friday evening on |
Under the help of the Internet, shopping is not a difficult work. Just clicking your mouse to choose the article you like, and the shopping is finished. You needn’t step out the room. It seems easy and quick. And there’s always a trap online. If you are careless, it will bring you trouble. You may find the color of the article is different from that you want, or the size is either too small nor too big. If you want to be different, you’d better not to buy clothes online. Once you put up the clothes you bought online and go out, you will find many people in the street wearing the same clothes like you.
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