Theideathatredmeansstopandgreenmeanshasinfluencedourliv...

問題詳情：

The idea that red means stop and green means has influenced our lives in more ways than just traffic signals(訊號). We have been taught from a young age that the color red means danger and green means it's okay to move forward. But why were those colors chosen for traffic lights in the first place? For something we have to look at every day, why couldn't they have been prettier colors?

Well, it's import to know that before traffic lights for cars, there were traffic signals for trains. At first, railway companies used red to mean stop, white to mean go, and green to mean warn. As you could imagine, trains ran into a few problems with white meaning go. For example, one train mistook a bright star for a white light and something unexpected happened. Because of that, railway companies finally moved green meaning go and used yellow to mean warn. And it's been that way ever since.

Red has always been a color that mean danger, long before cars were even around. This most likely started because it's the color with the longest wavelength(波長) so it can be seen somewhere farther than other colors.

But, believe it or not, yellow was once used to mean stop. Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area. Finally, highly reflective materials(高反*材料) were developed and red stop signs were born. Since yellow can be seen well at all times of the day, school zones, some traffic signs, and school buses continue to be printed yellow.

So next time you are impatiently waiting at a traffic light, don't get so mad at them, they've certainly come a long way.

根據材料內容選擇最佳*。

31．What were traffic signals for before traffic lights for cars?

A．Trains                    B．Boats.                    C．Planes                    D．Bicycles

32．Which of the following colors meant go at first?

A．Red.                      B．Yellow.                  C．White.                   D．Green.

33．Why does red mean danger?

A．Because it's the brightest color.                    B．Because it can be seen far away.

C．Because railway companies say so.              D．Because it has the shortest wavelength.

34．Why are school buses painted yellow?

A．Because yellow is a prettier color.

B．Because yellow once meat danger.

C．Because yellow can be seen well in daytime.

D．Because yellow means it's OK to go forward.

35．What does the text mainly tell us?

A．How important traffic lights are.

B．Which color has the longest wavelength.

C．What red, yellow and green can be used for.

D．Why traffic lights are red, yellow and green.

【回答】

31．A

32．C

33．B

34．C

35．D

【分析】

本文介紹了交通燈不同顏*訊號所代表的意義。最開始時，以紅*作為停止，綠*作為*告，白*作為通行。但是一列火車在晚上把星星誤認為白*，因此發生了不好的事情，最後將紅*作為停止，綠*作為通行，黃*作為*告。

31．A

細節理解題。根據it's import to know that before traffic lights for cars，there were traffic signals for trains．可知在汽車交通燈出現之前，交通訊號燈是為火車設定的。故選A。

32．C   

細節理解題。根據white to mean go可知白*意味著可以通行，故選C。

33．B

細節理解題。根據第三段This most likely started because it's the color with the longest wavelength（波長） so it can be seen somewhere farther than other colors．"可知紅*波長最長，比其他顏*能在更遠的地方被看見，可以更遠的地方*告有危險，故選B。

34．C

細節理解題。根據yellow can be seen well at all times of the day可知校車塗成黃*，是因為在一天的任何時候都可以看到黃*。故選C。

35．D

概括歸納題。根據But why were those colors chosen for traffic lights in the first place？可知主要介紹訊號燈為什麼是紅、黃河綠*。故選D。

點睛：根據題幹要求，在文中尋找*所在的語句，進行分析理解，詞義猜測，推理判斷和概括歸納，選出正確的選項。例如小題2，根據white to mean go可知白*意味著可以通行，故選C。

知識點：未分類

題型：閱讀理解