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M: Good evening and welcome to Physics Today, (5) Here we interview some of the greatest minds in physics as they help us to understand some of the most complicated theories. Today, I'm very pleased to welcome Dr. Melissa Phillips, professor of theoretical physics. She's here to tell us a little about what it is she studies. Dr. Pillips, you seem to study everything.
W: I guess that would be fair to say (6) I spent most of my time studying the Big Bang theory and where our universe came from.
M: Can you tell us a litle about that?
W: (7) Well, I'm very interested in why the universe exists at all. That may sound odd, but the fact is at the moment of the Big Bang, both matter and anti-matter were created for a short time, and I mean just a fraction of a second. The whole universe was a super-hot soup of radiation filled with these particles. So what's baffled scientists for so long is "why is there a universe at all?"
M: That's because matter and anti-matter are basically opposites of each other. They are exactly alike except that they have opposite electrical charges. So when they collide, they destroy each other?
W: Exactly. So during the first few moments of the Big Bang, the universe was extremely hot and very small. Matter and the now more exotic anti-matter would have had little space to avoid each other. This means that they should have totally wiped each other out, leaving the universe completely barren.
M: (8-1) But a recent study seems to point to the fact that when matter and anti-matter were first created, there were slightly more particles of matter, which allowed the universe we all live in to form?
W: (8-2) Exactly. Because there was slightly more matter, the collisions quickly depleted all the anti-matter and left just enough matter to create stars, planets and eventually us.
未听先知
预览四道题各选项,由选项中的 physics, physicists和 physicalworld等词可以初步推测,对话内 容与物理学以及物理学家有关;再结合 universe、 radiation、 matter和anti- matter可以进一步推测,对话内容涉及 宇宙、物质与反物质等方面。
详解详析
5. What does the man say is Physics Today?
D)。(详解)对话开头男土提到, Physics Today采访的是一些物理学界最伟大的专家,他们可以帮助我们 理解一些最为深奥的物理学理论。因此, Physics Today是对杰出的物理学家进行的一系列采访节目 答案为D)。
6. What is the woman physicist's main research area?
B)。详解对话中女士说,她大部分时间都在研究宇宙大爆炸理论以及宇宙从何面来,也就是宇宙的起 源。因此答案为B)。
7. What is the woman interested in?
D)。(详解)对话中女士说,她感兴趣的是字宙究竟为什么会存在。因此答案为D)。
8. What seems to be the finding of the recent study?
C)。(详解)对话最后男士提到,最近有研究表明,在物质和反物质最初产生之时,物质的数量比反物质稍 多,正是多出来的这部分物质让我们的字宙得以形成。女士对这一说法表示了肯定,并指出,由于物质 的数量稍多,在碰撞的时候消除了所有的反物质,剩下足够的物质产生了恒星和行星,最后产生了我们。 也就是说,宇宙得以形成是因为物质的数量充足,答案为C)。