2.电磁波的特性
电磁波在空间传播时,在任一位置(或时刻),E、B和V三者两两垂直,且E和B这两个物理量随时间和空间做周期性的变化;电磁波在空间传播不需要介质,可以在真空中传播;在真空中,电磁波传播的速度为光速C=3.0×108m/s
1.理解麦克斯韦的电磁场理论
(1)恒定的磁场不能产生电场,恒定的电场也不能产生磁场。
(2)均匀变化的磁场(B是t的一次函数)只能产生恒定的电场,均匀变化的电场产生恒定的磁场。
(3)非均匀变化的磁场才能产生变化的电场,非均匀变化的电场才能产生变化的磁场。
(4)振荡(按正弦规律变化)的磁场产生同频率振荡的电场,反之也然。
第二节:书面表达(满分30分)
|
赞同文理分科(46%) |
不赞同文理分科(54%) |
理由 |
如不分科,文、理都要学,增加了学生负担。 |
如分科,学生知识面窄,不利于学生的发展。 |
最近,关于“高中是否取消文理分科”的网上调查吸引了26万余名网民的积极参与。
请根据所给的信息写一篇英文报道,描述被调查者的不同看法,并表明你的看法。
注意:词数100左右,文章开头已给出(不计入词数)。
Recently more than 260,000 netizens have participated in the survey about whether the curriculum of senior high school should be divided into arts and science. …
__ _________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
2009学年第一学期期中杭州地区七校联考试卷
座位号 |
|
|
|
高三年级英语学科
1 [A][B][C][D] 2
[A][B][C][D] 3
[A][B][C][D] 4
[A][B][C][D] 5 [A][B][C][D] 6 [A][B][C][D] 7 [A][B][C][D] 8 [A][B][C][D] 9 [A][B][C][D] 10 [A][B][C][D] 11 [A][B][C][D] 12 [A][B][C][D] 13 [A][B][C][D] 14 [A][B][C][D] 15 [A][B][C][D] 16 [A][B][C][D] 17 [A][B][C][D] 18 [A][B][C][D] 19 [A][B][C][D] 20 [A][B][C][D] 21 [A][B][C][D] 22 [A][B][C][D] 23 [A][B][C][D] 24 [A][B][C][D] 25 [A][B][C][D] 26 [A][B][C][D] 27 [A][B][C][D] 28 [A][B][C][D] 29 [A][B][C][D] 30 [A][B][C][D] 31 [A][B][C][D] 32 [A][B][C][D] 33 [A][B][C][D] 34 [A][B][C][D] 35 [A][B][C][D] 36 [A][B][C][D] 37 [A][B][C][D] 38 [A][B][C][D] 39 [A][B][C][D] 40 [A][B][C][D] 41 [A][B][C][D] 42 [A][B][C][D] 43 [A][B][C][D] 44 [A][B][C][D] 45 [A][B][C][D] 46 [A][B][C][D] 47 [A][B][C][D] 48 [A][B][C][D] 49 [A][B][C][D] 50 [A][B][C][D] 51 [A][B][C][D] 52 [A][B][C][D] 53 [A][B][C][D] 54 [A][B][C][D] 55 [A][B][C][D] 56 [A][B][C][D] 57 [A][B][C][D] 58 [A][B][C][D] 59 [A][B][C][D] 60 [A][B][C][D] 61 [A][B][C][D][E][F] 62 [A][B][C][D][E][F] 63 [A][B][C][D][E][F] 64 [A][B][C][D][E][F] 65 [A][B][C][D][E][F] |
短文改错(共10小题;每小题1分,满分10分)
I will share you a true story happened a couple of days ago. One of my classmate bought a bag of snacks from the food stand. A few roommates were then invited to enjoy the food. Unluckily, all of them got poisoned and had stomachaches with our faces pale. They are quickly sent to a nearby hospital. Doctors examined them and gave them some medicine. They were out of danger soon before taking the medicine. This accident should make us to realize the serious of the food safety problem. I strongly suggest that the whole society pays much more attention to the food safety.
书面表达(满分30分)
Recently more than 260,000 netizens have participated in the survey about whether the curriculum of senior high school should be divided into arts and science. …
_________________________________________________________________________________________ ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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(从第11处起)不计分。
I will share you a true story happened a couple of days ago. One of my classmate bought a bag of snacks from the food stand. A few roommates were then invited to enjoy the food. Unluckily, all of them got poisoned and had stomachaches with our faces pale. They are quickly sent to a nearby hospital. Doctors examined them and gave them some medicine. They were out of danger soon before taking the medicine. This accident should make us to realize the serious of the food safety problem. I strongly suggest that the whole society pays much more attention to the food safety.
20. - Lucy, could you please spare me a few minutes?
- ________, but I hope “a few minutes” won’t turn into an hour.
A. It doesn’t matter B. That’s kind of you
C. I’m afraid not D. I guess so.
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com