问题 填空题
有一个最简分数,如果分子加1,分子则比分母少2;如果分母加1,则分数值等于
1
2
,原分数是______.
答案

设原分数的分子是x,则分母是x+1+2,由题意列出方程

x
x+1+3+1
=
1
2

      

x
x+4
=
1
2

          2x=x+4

        2x-x=4

           x=4;

4+1+2=7;

因此这个分数是

4
7

故答案为:

4
7

选择题

短文改错(共10小题 ;每小题1.5分, 满分15分 )

此题要求改正所给短文的错误。对标有题号的每一行做出判断:如无错误,在该行右边横线上画一个(√);如有错误(每行只有一个错误),则按下列情况改正:

该行多一个词 :把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。该行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。该行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。注意:原行没有错的不要改正。

Dear Editor,

Recently, my classmates have had a heated discussion about that     

小题1:_______

we should have optional courses(选修课) in high schools. Some students were 小题2:_______

in favor of the optional courses. They say interest is the best teacher   小题3:______

and our spare time will be colorful and meaningful. Students        

小题4:_______

can not only enlarge their knowledges but also improve their abilities.   小题5:_______

However, others are against the idea, said that optional courses         小题6:_______

will take up too much time as well as energy. In addition to, some optional

小题7:_______

courses have something to do with the College Entrance Examination. They   小题8:_______

are afraid they’ll fall behind their classmates if they will take the optional 小题9:_______

courses. I’d like to take one or two of the optional courses, which, I think,

will certain benefit me a lot.                                     

小题10:______

填空题 案例分析题