導語：多賞析閱讀試題的段落，對提高閱讀能力也有一定的作用哦。下面是YJBYS小編精選的三個段落，歡迎大家賞析。
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，如果這一切成為可能的話，那麼將會出現一些非常令人困惑的.邏輯混亂……比如，如果某人或某物逆時間旅行並改變隨之發生的情況，那會發生什麼情況呢?又比如說，你是否曾聽說過這樣的事情——一位時間旅行者在時間隧道中穿梭往返，利用各種醫學技術使自己成為自己的父親和母親?還有，如果時間旅行成為可能，未來的所有人都會在哪裡呢?他們肯定想來見見我們這些滯留在21世紀的可憐人。
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.
愛因斯坦去世後，1971年，兩名科學家完成了一項重要實驗。他們使用兩個原子鐘，將時間調成一致。其中一個被放在飛機上，而另一個則置於地球上的原來地方。隨後飛機環繞全球飛行了80個小時。按照愛因斯坦理論，相對於地面上的時鐘，飛機上的時鐘會因為80個小時的運動而減少時間。當他們將兩個時鐘拿到一起比較時，飛機上的時鐘確實較另一隻慢了幾毫微秒。
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.
以前科學小說中提出的很多想法已經變成了科學的現實。拿太空探險來說，50年代，這只不過是一種科學狂想，很少人相信有一天會變成現實。可是現在它已成為現代生活的一個組成部分，以至於一次最新的宇航器發射或者一個新行星的發現已不再列為國內新聞。
