Question

【題目】 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 (波長(zhǎng)) 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! 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

D.it disappears very quickly

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

A.the colorB.the sizeC.the positionD.the weight

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

A.go outB.go upC.go inD.go down

【4】Which of the following is true?

A.The wavelengths of red light are longer than those of blue light.

B.A four-meter-long fish looks three meters long underwater.

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 Standard of Color UnderwaterB.The Direction of Light Underwater

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

Answer 1

【答案】

【1】C

【2】A

【3】D

【4】A

【5】D

【解析】

本文大意：這是一篇說明文。文章主要講解了一些水下光學(xué)現(xiàn)象，并舉例說明水下顏色變化的原因。

【1】細(xì)節(jié)理解題，由第一段第二句The objects appear closer to you than they exactly are.可知，水下的物體沒有看上去那么近，所以有的時(shí)候你伸手去夠水里的東西，卻夠不著。故選C。

【2】細(xì)節(jié)理解題，由第四段第四句 Watch carefully the changes in color as you descend in the water.可知，潛水衣的例子被用來解釋說明水下物體顏色的變化。故選A。

【3】詞義猜測(cè)題，由第四段第六句"As you go down deeper.以及下文提到隨著潛水深度的加深，顏色逐漸變化。可知，劃線的descend在文中可能是“下潛”的意思。故選D。

【4】推理判斷題，根據(jù)“The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing.”可知，紅色的光波是三種顏色中波光最長(zhǎng)的 ，故A正確；根據(jù)“just because sometimes things can seem to be as much as about 33 percent bigger in water!只是因?yàn)橛袝r(shí)候水里的東西看起來要比在陸地上大33%！”故B錯(cuò)誤；選項(xiàng)C說的是很多水會(huì)被深水中的游泳者吸收。文中并沒有提及，故C錯(cuò)誤；根據(jù)“Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost!即使在水下6到9米的地方，你也會(huì)看起來很可怕，像個(gè)幽靈！”只是看起來像幽靈一樣，而不是遇到幽靈，可知D錯(cuò)誤，故選A。

【5】最佳標(biāo)題，本文首段首There's much to see under the sea, but you need to remember that light behaves differently in water than in air. 是文章的主題句，通讀全文并結(jié)合主題句可知，文章主要講解了一些水下光學(xué)現(xiàn)象。故選D。