2012職稱英語考試理工類C級試題及參考答案
發布時間：2012-07-19 共6頁
- 第1頁：第一部分：詞匯選項
- 第2頁：第二部分：閱讀判斷
- 第3頁：第三部分：概括大意和完成句子
下面的短文后有2項測試任務：（1）第23~26題要求從所給的6個選項中為指定段落每段選擇1個小標題；（2）第27~30題要求從所給的6個選項中為每個句子確定一個最佳選項。
Learn about Light
1 Ancient civilizations www.haxgd.compedocles and a Dutch scientist named Christian Huygens believed that light was like a wave. According to them, light spread out and travelled like a straight line. This theory was accepted during the 19th century.2 ln 1905, Albert Einstein published a research paper in www.haxgd.com of energy that allows us to see things around us.
3 Things that give off light are known as sources of light. During the day, the primary source of light is the sun. Other sources of light include stars, flames, flashlights, street lamps and glowing gases in glass tube.
4 When we draw the way light travels we always use straight lines. This is because normally light rays travel in a straight line. However, there are some instances that can change the path and even the nature of light. They are reflection, absorption, interference （干擾）, etc.
5 Physicists have attempted to measure the speed of light since the early times. In 1849, Hippolyte Fizeau conducted an experiment by directing a beam of light to a mirror located kilometers away and placed a rotating cogwheel（旋轉齒輪）between the beam and the mirror. From the rate of rotation of the wheel, number of wheel’s teeth and distance of the mirror, he was able to calculate that the speed of light is 313 million meters per second. In a vacuum（真空）,however, the speed of light is 299,792,458 meters per second. This is about a million times faster than the speed of an airplane.
23. Paragraph 2 ___A___
24. Paragraph 3 ___B___
25. Paragraph 4 ___D___
26. Paragraph 5 ___C___
A. How is the nature of light explained today?
B. What are sources of light?
C. How did physicists measure the speed of light?
D. How does light travel?
E. How did people think of light years ago?
F. What causes a shadow?
27. Objects are visible to the human eye as light is __D____
28. Stars, flames, flashlights are some examples of ___A___
29. Some instances such as reflection and absorption can change ___C___
30. Hippolyte Fizeau conducted an experiment to measure ___E___
A. sources of light
B. the speed of light
C. the path of light
D. a straight line
E. a beam of light
F. a form of energy
