课程咨询

托福考试网 托福资料下载 托福资讯 0元讲座 水平测试

托福考试练习
新东方在线 > TOEFL > 托福阅读 > 正文
托福培训

扫码免费领资料

内含托福全科备考资料

更有免费水平测试及备考规划

托福培训

扫码关注掌握一手留学资讯

回复XDF免费水平测试

录播精讲 直播课HOT

托福阅读30天备考计划：第23天备考内容

2014-10-05 17:03:00来源：新东方网

　　很多同学想备考托福却苦于没有办法，新东方在线托福考试频道为大家准备了托福30天备考计划：每一天制定不同的托福备考方案，30天后，让我们拿下托福100+!托福阅读30天备考计划：第23天备考内容。

　　TPO18-3 Lighting 闪电 【TPO18原文及答案】

　　1. The electrical discharge takes place when the attractive tension between a region of negatively charged particles and a region of positively charged particles becomes so great that the charged particles suddenly rush together.

　　2. At such temperatures, the collision between the ice pellets and the ice crystals causes electrical charges to shift so that the ice pellets acquire a negative charge and the ice crystals become positively charged. Then updraft wind currents carry the light, positively charged ice crystals up to the top of the cloud. The heavier negatively charged ice pellets are left to concentrate inthe center. This process explains why the top of the cloud becomes positively charged, while the center becomes negatively charged.(解释该自然现象的主要段落，信息量大，两道事实信息题一道推断题的出处。)

　　3. Belowthis large, cold, negatively charged region, the cloud is warmer than -15℃, and at these temperatures, collisions between icecrystals and falling ice pellets produce positively charged ice pellets that then populate a small region at the base of the cloud.(考察因果关系的事实信息题出题点。)

　　4. Most lightning takes place within a cloud when the chargese paration within the cloud collapses. However, as the storm cloud develops,the ground beneath the cloud becomes positively charged and lightning can take place in the form of an electrical discharge between the negative charge of the cloud and the positively charged ground.

　　5. Lightning that strikes the ground is the most likely to be destructive, so even though it represents only 20 percent of all lightning, it has received a lot of scientific attention.(前半句为修辞目的题出处，和后半句有因果关系，向后在本句找答案。)


本文关键字: 托福阅读30天备考计划 托福阅读

托福辅导

关注新东方在线托福

托福机经·Official题目练习

考前重点突破·听说读写海量资料

更多资料

关注新东方在线托福，
回复【XDF】获取大礼包

托福辅导
  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加】，回复对应关键字领取学习资料。
更多>>
更多内容

免费获取托福备考大礼包

微信扫描下方二维码 立即领取

托福辅导
更多>>
更多公益讲座>>
更多>>
更多资料
托福TPO 托福听力练习 托福口语练习 托福阅读练习 托福写作练习
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10