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问题 填空题

点P1（x1，y1）、点P2（x2，y2）是一次函数y=-4x+3图象上的两点，且x1＜x2，则y1与y2的大小关系是y1______y2．

答案

由y=-4x+3可知，k=-4＜0，y随x的增大而减小，

又x1＜x2，

∴y1＞y2．

改错题

假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的作文。文中共有十处语言错误，要求你在错误的地方增加、删除或修改某个词。

增加：在缺词处加上一个漏字符号（∧），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.每处错误及修改均仅限一词；

2.只允许修改十处，多者（从第11处起）不计分。

I like music very much, pop songs particularly. Every evening then I am doing homework and at weekends when I at home, I always play some of my favorite songs on my tape recorder. The familiar patterns of notes attracts me into the colourfully world of music. Now and then I stopped to follow the songs. Sometimes, my mother comes in, asking me to fix my attention to my homework. She does not like the pop music. Like most grown-ups, she enjoys folk songs, because the peaceful music reminds her of their beautiful life when she was young. It is a truth which people of different age understand music differently and enjoy different kinds of music.
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选择题

如图示，一个边长为d正方形线框匀速进入右边的复合磁场区域，两个磁场强度相同，宽度都为d，以逆时针方向为电流的正向，则在线框运动过程中，下列能正确反映框中的电流随时间的变化趋势是（   ）
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