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第一节 短文改错(共10小题;每小题1分,满分10分)

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

此行多一个词: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。

此行缺一个词: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。

此行错一个词: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。

It would be difficult to imagine modern life with            56________

the telephone. It has become an useful instrument of           57________

communication, save much time and travel by enabling       58________

people to talk to one another over great distances.          59________

Nowadays it is as easy to talk cross a continent,           60________

or even overseas, it is to talk to one's next            61________

neighbor. Therefore, it is in emergencies              62________

which the telephone really proves its usefulness. When      63________

there is a fire , and when someone is suddenly ill , the       64________

first thing one thinks of it is " Where is the nearest  telephone?“  65________

试题详情

22.(本小题满分12分)

 已知点F1(-2,0),F2(2,0),点P满足|PF1|-|PF2|=2,记点P轨迹为E.

   (Ⅰ)求轨迹E的方程;

   (Ⅱ)直线l :y=kx+b与轨迹E相交于P、Q两点,M(-1,0)恒满足PM⊥QM.

   (1)求证:直线l恒过定点N;

 (2)求参数b取值范围.

试题详情


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