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PETS2考试阅读文章精选段落赏析
导语：多赏析阅读试题的段落，对提高阅读能力也有一定的作用哦。下面是YJBYS小编精选的三个段落，欢迎大家赏析。
一
If it were possible, however, it would present some pretty knotty paradoxes…… For example, what if someone or something traveled back in time and changed the ensuing future? And have you heard the one about the time traveler who dots back and forward in time and by means of various medical technologies is able to be his own father AND mother?! And besides, if time travel is possible, where are all the people from the future——surely they'd want to come and meet us poor stranded 21st century beings?
然而，如果这一切成为可能的话，那么将会出现一些非常令人困惑的逻辑混乱……比如，如果某人或某物逆时间旅行并改变随之发生的情况，那会发生什么情况呢?又比如说，你是否曾听说过这样的事情——一位时间旅行者在时间隧道中穿梭往返，利用各种医学技术使自己成为自己的父亲和母亲?还有，如果时间旅行成为可能，未来的.所有人都会在哪里呢?他们肯定想来见见我们这些滞留在21世纪的可怜人。
二
In 1971, after Einstein's death, two scientists were able to carry out a crucial experiment. They used two atomic clocks, synchronized them, and placed one on a plane, while the other stayed in the same location on Earth. The plane then flew around the world for 80 hours. According to Einstein's theory, the clock on the plane would be expected to have lost time, due to being in motion over 80 hours compared to the clock on the ground. When they brought the clocks together and made a comparison, the clock on the plane was indeed a few nanoseconds slower than the other clock.
爱因斯坦去世后，1971年，两名科学家完成了一项重要实验。他们使用两个原子钟，将时间调成一致。其中一个被放在飞机上，而另一个则置于地球上的原来地方。随后飞机环绕全球飞行了80个小时。按照爱因斯坦理论，相对于地面上的时钟，飞机上的`时钟会因为80个小时的运动而减少时间。当他们将两个时钟拿到一起比较时，飞机上的时钟确实较另一只慢了几毫微秒。
三
Many science-fictional ideas from the past have subsequently became scientific realities. Take space exploration, for example. In the 1950s this was just a fantastical idea that few people would have dreamt could actually happen. Now it's such a part of modern life that the latest blastoff of a spacecraft, or the discovery of a new planet often doesn't even make the national news.
以前科学小说中提出的'很多想法已经变成了科学的现实。拿太空探险来说，50年代，这只不过是一种科学狂想，很少人相信有一天会变成现实。可是现在它已成为现代生活的一个组成部分，以至于一次最新的宇航器发射或者一个新行星的发现已不再列为国内新闻。
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