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问题 选择题
方程：①x2-x=4，②2x-y=0，③x=1，③
1
x
+2=3，④3y-2=y+1．
其中是一元一次方程的个数为（　　）
A．1个B．2个C．3个D．4个
答案

①x2-x=4，未知数x的次数是2，是一元二次方程；故本选项错误；

②2x-y=0，含有两个未知数；故本选项错误；

③x=1，符合一元一次方程的定义；故本选项正确；

③

1
x
+2=3，分母中含有未知数，是分式方程；故本选项错误；

④由3y-2=y+1得到2y-3=0，符合一元一次方程的定义；故本选项正确．

故选B．

写作题

阅读下面短文，然后按照要求写一篇150词左右的英语短文。

Lots of teenagers are trying to enter a university by coping stories and phrases from the internet to fill out their personal statements in Britain. Personal statements are used to show what can make applicants （申请）different as they outline their interests and reasons for studying a particular course. But it seems that some ideas and words are alike, even the same, thanks to an internet site designed to help those who don’t know what to write about themselves. A study found that nearly 800 applications had personal statements containing phrases taken from three online examples. The study, which involved examining 50,000 personal statements, found that 5% used the material from the internet, most from one free website. Borrowed material was most likely to appear at the end of a statement or where the applicant described the reasons for wanting to study a subject. Almost all applications are now completed online, but the new evidence of Internet temptation（诱惑）follow concern that teenagers are cutting and pasting material for A-level coursework(课程作业). A spokesman said later that he and his partners were looking for ways examine whether people appeared to be copying material.

[写作内容]

　　1．以约30个词概括短文的要点；

　　2．以约120个词表达你对校园中出现作弊现象的看法，并包括如下要点：

　　（1）分析某些学生作弊的原因；

（2）指出作弊引起的不良后果；

（3）号召学生们杜绝作弊现象的发生。

[写作要求]

1.          在作文中可以使用实例或其他论述方法支持你的论点，也可以参照阅读材料的内容，但不得直接引用阅读材料中的句子。

2.          作文中不能出现真实姓名和学校的名称。

[评分标准]

　　概括准确，语言规范，内容合适，篇章连贯。

（请考生在答题卷上作答。）
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单项选择题

许多成语源于我国古代著名的历史故事，下列成语故事发生在战国时期的是( )。

A．卧薪尝胆

B．退避三舍

C．秦晋之好

D．负荆请罪
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