摘要： C There’s much to see under the sea, but you need to remember that light behaves differently in water than in air. The objects appear closer to you than
C
There’s much to see under the sea, but you need to remember that light behaves differently in water than in air. The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.
Objects under water will appear larger than they would on the surface, too. Be careful not to tell any stories about the big fish that got away. The fish might not be so big after all! It’s just because sometimes things can seem to be as much as about 33 percent bigger in water!
What’s more, in deeper water, colors just don’t seem as bright. In fact, it looks as if some colors are missing. Remember the color of an object results from the wavelengths(波长) of light that are reflected from its surface. And light is taken in as it moves down through the water.
Swimmers wear wet suits to keep warm underwater. Let’s take a bright red, yellow, and blue wet suit as an example. These colors are hard to miss on the surface of water. Watch carefully the changes in color as you descend in water. The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part. Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost(鬼怪)! And you have to wait for your return to the surface to enjoy the bright colors again.
Do you have a better understanding of the behavior of the light underwater? We need to be careful about the objects around us and explore(探索) their mysteries by ourselves.
56. You miss the object underwater when you want to touch it because___________.
A. your eyesight is quite poor
B. your are not quick enough
C. it is not as close as it seems
D. it disappears very quickly
57. The example of the wet suit is used to explain the change of __of an object underwater in paragraph 4.
A. the size B. the color C. the position D. the weight
58. The underlined word “descend” probably means _________ in paragraph 4?
A. move up B. move on water
C. stop breathing for a while D. go down
59. Which of the following is true according to the passage?
A. A four-meter-long fish looks three meters long underwater.
B. Much water will be taken in by the swimmer deep in the water.
C. The wavelengths of red light are longer than those of the blue light.
D. You will see a ghost if you go as deep as 6 to 9 meters into the sea.
60. Which of the following would be the best title of the passage?
A. The Standard of Color Underwater
B. The Direction of Light Underwater
C. The Beauty of Color Underwater
D. The Behavior of Light Underwater
【答案】56. C 57. B 58. D 59. C 60. D
【解析】
这篇短文主要讲述了由于光在水中表现和在空气中不同，在海底物体看起来比在空气中更接近你，另外在更深的水中，颜色也看起来不同。
【56题详解】
细节理解。根据文中The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.可知，它不像看上去那么近。
故选C
【57题详解】
段落大意。通读整个第四段可知，以湿衣服为例，说明水下物体颜色的变化。故选B。
【58题详解】
词句猜测。根据下文The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part可知上文中descend的意思是“向水下走”。故选D
【59题详解】
细节理解。根据文中The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part.可知，红光的波长比蓝光的波长长。故选C。
【60题详解】
标题归纳。通读整篇短文可知，这篇短文主要讲述了光在水下的特性。故选D。
