2018年9月公共英語三級口語重點句型（3）

　　Light travels very fast.It moves at 186，300 miles a second，that is 300，000 kilometers a second光速很快，每秒可行十八萬六千三百英里，即三十萬公里。

　　A ray of light usually travels in a straight line;but sometimes it bends.It leaves the air and goes into the glass，then it bends.一束光線通常走直線，但有時也彎曲，當離開空氣進入玻璃時，它就彎曲。

　　Hydrogen burns easily in oxygen or in air.氫氣在氧氣或空氣中易燃。

　　The earth is one of the nine planets.地球是九大行星之一。

　　九大行星都自轉(zhuǎn)，它們又都圍著太陽按同一方向轉(zhuǎn)動。

　　Why does the earth always move round the sun and not fly off into cold space?The sun's gravitation gives the answer為什么地球一直圍太陽轉(zhuǎn)而脫離不到太空去呢?太陽的牽引力能解釋這個問題。

　　A vacuum is a space with nothing in it.真空是指不包含任何東西的空間。

　　Aristotle said that heavy things fall faster than light things，but he was wrong.

　　亞里士多德說重的物體比輕的物體降落快，但他錯了。

　　Some countries have large numbers of earthquakes.Japan is one of them.

　　有些國家地震頻繁。日本是其中之一。

　　I'm very poor at physics, but Kate is good at it.我對物理一竅不通，但凱特很在行。

　　I don't like electricity，but I'm interested in the law of universal gravitation.

　　我討厭電學，但我對萬有引力定律感興趣。

　　Which is faster，sound or light?哪一個快，聲還是光?

　　I think physics is the most important subject.我認為物理學是最重要的科目。