閱讀測驗
Red means stop, yellow means slow down, and green means go. Around the world, traffic lights come in these three colors and represent the same instructions. Even young children are familiar with this before they get behind the wheel . But where and why was this color scheme first used?
Before traffic lights were invented, traffic police stood at major intersections to direct traffic. In 1868, the first traffic lights were installed at a busy intersection in London. But the idea for them, proposed by a railway engineer, had already been used on railway lines for decades. When train engineers saw a red light, they stopped. Red was chosen because, being the color of blood, it had represented danger for centuries. Meanwhile, a white light meant go, and a green light told the driver to exercise caution. White was used simply because it required no color filter. Green was chosen probably because it contrasts nicely with red. This system seemed to work well; however, when the color filters for red and green lights fell off, they appeared white and accidents occurred. As a result, white was eliminated, and yellow was adopted to represent caution, while green meant go. Yellow was suitable because it differentiated itself from the other two colors.
Slow down, or you’ll get a ticket.
放慢速度,否則你會被開罰單。
The shirt comes in three sizes: small, medium, and large.
這款襯衫有三種尺寸:小、中和大。
Are you familiar with my boss?
你和我老闆熟嗎?
After I took the shirt out of the washing machine, its top button fell off.
我從洗衣機拿出我的襯衫後,上面的第一顆扣子掉了。
We saw a car powered by solar energy at that car exhibition.
我們在那場車展中看到一臺太陽能驅動的汽車。
I get nervous whenever my wife is behind the wheel.
每當我太太開車時,我都很緊張。
The cost of living varies from country to country.
不同國家的生活費用各不相同。