Question

【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 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 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 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 about 6 to 9 meters underwater , you will look terrible, like a ghost! And you have to wait for your return to the surface to enjoy the bright colors again !

根据材料内容选择最佳答案。

【1】You miss the object underwater when you want to touch it because________.

A.your eyesight is quite poorB.you are not quick enough

C.it disappears very quicklyD.it is not as close as it seems

【2】The example of the wet suit is used to explain the change of________of an object underwater .

A.the sizeB.the weightC.the positionD.the color

【3】The underlined word " descend " probably means________in Chinese in this passage .

A.上升B.漂浮C.屏息D.下潜

【4】Which of the following is true ?

A.A four-meter-long 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

D.You will see a ghost if you go as deep as 6 to 9 meters into the sea

【5】The best title of this passage is________.

A.The Standand of Color UnderwaterB.The Behavior of Light Underwater

C.The Brightness of Color UnderwaterD.The Direction of Light Underwater

Answer 1

【答案】

【1】D

【2】D

【3】D

【4】B

【5】B

【解析】

这是一篇说明文。文章主要讲解了一些水下光学现象，并举例说明水下颜色变化的原因。

【1】句意：当你想触摸水下的物体时，会摸不中，因为它没有看上去那么近。

细节理解题。由第一段第二句“The objects appear closer to you than they exactly are.”可知，水下的物体没有看上去那么近。故选D。

【2】句意：“潜水衣”的例子被用来解释说明水下物体颜色的变化。

细节理解题。由第四段第四句“Watch carefully the changes in color as you descend in the water.”可知，“潜水衣”的例子被用来解释说明水下物体颜色的变化。故选D。

【3】句意：划线的“descend”在文中可能是“下潜”的意思。

词义猜测题。由第四段第六句“As you go down deeper...”可知，划线的“descend”在文中可能是“下潜”的意思。故选D。

【4】句意：下列哪一项正确？

细节理解题。由第二段最后一句“Objects under water will appear larger...”可知，在水中看到的物体比实际的体积大,所以 A项错误。由第四段第五句“The red part...the longest among these three colors...”可知，红色的光波是三种颜色中波光最长的，所以B项正确。由第三段最后一句“And light is taken in as it moves down through the water.”可知，光在水下被吸收了，所以C项错误。由第四段倒数第二句“... you will look terrible, like a ghost!”可知，你看起来很可怕，像鬼一样，所以D项错误。故选B。

【5】句意：这篇文章的最佳标题是水下光学现象。

主旨大意题。本文首段首句“...light behaves differently in water...”是文章的主题句。通读全文并结合主题句可知，文章主要讲解了一些水下光学现象。故选B。

主旨大意题主要考查我们对一篇文章的深层理解程度以及在阅读中准确把握文章主旨大意的能力。一般针对某一语篇的主题、标题或目的设题。凡是问文章标题、大意或写作意图的题目都属于主旨大意题，如第五小题：The best title of this passage is The Behavior of Light Underwater。我们在阅读文章时，常常会发现一些表明作者观点的主题句。找出文章的主题句是解答主旨大意题非常有效的方法之一。主题句常出现在文章的开头或末尾，有时也会出现在中间部分，而本文的首段首句就是文章的主题句。