课程咨询
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

新托福听力材料科学讲座:材料科学

2017-03-27 12:27:42来源:网络

  为了帮助大家了解最新托福考情,新东方在线托福网为大家带来新托福听力解析:材料科学讲座一文,希望对大家托福备考有所帮助。

  2017年3月25日托福听力讲座题,先来第一篇,材料科学。如果2/3不认识,那将是极惨的。

新托福听力解析:材料科学讲座

  答案:

  What is the main purpose of the lecture?

  To describe properties of a recently developed nanomaterial

  What similarity between graphene and diamond does the professor emphasize?

  Both have a simple atomic pattern.

  Why does the professor mention adhesive tape?

  To explain how the first sample of graphene was obtained

  What does the professor imply about silicon?

  Its usefulness for new electronics is limited.

  According to the professor, what problems must researchers solve before graphene can be used commercially?

  Click on 2 answers.

  How to mass-produce large sheets of graphene.

  How to regulate graphene’s electrical conductivity.

  Why does the professor say this?

  "Some scientists came up with the idea that a material like this could be used in a variety of ways, but others were skeptical, because, really, how do you make a sheet of material that's just one atom thick."

  To emphasize the difficulty of such a project

  以上就是新东方在线托福网为你带来的新托福听力解析:材料科学讲座,更多精彩敬请关注新东方在线托福网。


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
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