题目内容
【题目】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. That 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(反射) 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 the 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!
【1】You miss the object underwater when you want to touch it because .
A. your eyesight is quite poor
B. you are not quick enough
C. it is not as close as it seems
【2】The underlined word “descent” probably means “ ” in Chinese in this passage.
A. 下潜 B. 漂浮 C. 屏息
【3】Which of the following is true?
A. A fourmeterlong fish looks three meters long underwater.
B. The wavelengths of red light are longer than those of blue light.
C. Much water will be taken in by the swimmer deep in the water.
【4】The best title of this passage is .
A. The Standard of Color Underwater
B. The Direction of Light Underwater
C. The Behavior of Light Underwater
【答案】
【1】 C
【2】 A
【3】 B
【4】 C
【解析】
文章大意：由于光在水中的表现与在空气中的表现不同，故而在海底，物体看起来比它们更接近你。水下物体看起来会比表面上的物体大。比如鱼可能也不会有传说的那么大主要是因为有时水中的东西看起来大约多了33％！另外，在更深的水中，颜色看起来并不那么明亮。物体的颜色是由从其表面反射的光的波长产生的。当光线在水中向下移动时，光线会被吸收，颜色也会随着在水中下降的深度变化而变化。
【1】细节理解题。题干句意：You miss the object underwater when you want to touch it because .当你想要触摸水下的物体时，你会错过它，因为 。选项A. your eyesight is quite poor你的视力很差。B. you are not quick enough你还不够快。C. it is not as close as it seems它不像看上去那么近。结合原文信息，根据第一段The objects appear closer to you than they exactly are.这些物体看起来比实际上离你更近。第二段首Objects under water will appear larger than they would on the surface, too.水下的物体也会比在水面上看起来更大。可知正确答案为：C
【2】词义猜测题。题干句意：The underlined word “descent” probably means “ ” in Chinese in this passage.带下划线的单词descent在汉语中可能是 意思。结合原文信息，根据第三段And light is taken in as it moves down through the water.当光线在水中向下移动时，光线会被吸收。可知descent应为moves down的近义词。故正确答案为：A
【3】细节理解题。题干句意：Which of the following is true?下列哪一项是正确的？选项A. A fourmeterlong fish looks three meters long underwater.一条四米长的鱼在水下看起来有三米长。B. The wavelengths of red light are longer than those of blue light.红光的波长比蓝光的波长更长。C. Much water will be taken in by the swimmer deep in the water.游泳者在深水中会吸入很多水。结合原文信息，根据最后一段The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing.红色的部分现在看起来几乎是黑色的，因为在这三种颜色中波长最长的红光不见了。可知正确答案为：B
【4】标题判断题。题干句意：The best title of this passage is .这篇文章最好的标题是 。选项A. The Standard of Color Underwater水下颜色标准。B. The Direction of Light Underwater水下光的方向。C. The Behavior of Light Underwater水下光的特性。结合原文信息，根据文章手句There's much to see under the sea, but you need to remember that light behaves differently in water than in air.在海底可以看到很多东西，但是你需要记住光在水中和空气中的表现是不同的。可知正确答案为：C
