课程咨询

GRE首页 GRE课程 GRE动态 0元讲座 GRE模考网站

新东方在线 > GRE > GRE阅读 > 正文
扫码关注掌握一手留学资讯

扫码关注掌握一手留学资讯

回复XDF免费领

水平测试和备考资料

扫码关注公众号

GRE阅读题目解析：真空衰变

2017-02-13 10:38:41来源：网络

　　【GRE阅读题目解析:真空衰变】GRE考试考什么？GRE阅读是重点。新东方在线GRE频道为大家带来GRE阅读题目解析:真空衰变，答案见下一页，希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

　　查看全部：GRE阅读答案解析(汇总)

　　GRE阅读题目解析:真空衰变

　　P3

　　The essential condition for the decay of the vacuum is the presence of an intense electric field. As a result of the decay of the vacuum, the space permeated by such a field can be said to acquire an electric charge, and it can be called a charged vacuum. The particles that materialize in the space make the charge manifest. An electric field of sufficient intensity to create a charged vacuum is likely to be found in only one place: in the immediate vicinity of a superheavy atomic nucleus, one with about twice as many protons as the heaviest natural nuclei known. A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum. (131 words)

　　7. The author's assertions concerning the conditions that lead to the decay of the vacuum would be most weakened if which of the following occurred?

　　(A) Scientists created an electric field next to a vacuum, but found that the electric field was not intense enough to create a charged vacuum.

　　(B) Scientists assembled a superheavy atomic nucleus next to a vacuum, but found that no virtual particles were created in the vacuum's region of space.

　　(C) Scientists assembled a superheavy atomic nucleus next to a vacuum, but found that they could not then detect any real particles in the vacuum's region of space.

　　(D)Scientists introduced a virtual electron and a virtual positron into a vacuum's region of space, but found that the vacuum did not then fluctuate.

　　(E) Scientists introduced a real electron and a real positron into a vacuum’s region of space, but found that the total energy of the space increased by the energy equivalent of the mass of the particles.

　　点击下一页查看答案：

本文关键字: GRE阅读 GRE阅读题

上一页 1 2 下一页

添加新东方美研助教回复【GRE】获取

模考真题|写作题库|阅读机经|佛脚词汇

更多资料

添加美研助教号，
回复【GRE】获取备考必看资料包

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

关注新东方美研助教

回复【GRE】获取备考必看资料包

新东方美研备考资料
更多>>
更多惊喜>>

添加美研助教号，
回复【GRE】获取备考必看资料包

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【添加美研助教号】，回复对应关键字领取学习资料。
更多>>
更多资料
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10