Once upon a time the colors of the world started to quarrel.

    Green said, “Clearly I am the most important. I am the sign of life and hope. I was chosen for grass, trees and leaves. Look over the countryside and you will see that I am in the majority.”

    Blue interrupted, “You only think about the earth, but consider the sky and the sea. It is the water that is the basis of life.”

    Yellow chuckled(咯咯地笑). “The sun is yellow, as well as the moon and the stars. Every time you look at a sunflower, the whole world starts to smile.”

    Red could bear it no longer. “I am the ruler of all of you. I am blood-life's blood! I am the color of danger and bravery. I bring fire into the blood. I am the color of passion and love.”

    Purple stood at his full height. “I am the color of royalty(皇室) and power. I am the sign of authority (权力) and wisdom. People do not question me! They listen and obey.”

    Finally Indigo(靛蓝) spoke with determination, “Think of me and I am the color of silence. I represent thought and reflection. You need me for balance and contrast(对比), for prayer and inner peace.”

    The colors went on boasting(吹嘘), each showing off his or her own advantages. Suddenly there came a flash of bright lightening. Thunder rolled and boomed. Rain started to pour down. The colors were scared to death.

    In the midst of the quarrelling, rain began to speak, “You foolish colors. Don't you know that you were each made for a special purpose, unique and different? Join hands with one another and come to me.”

    Doing as they were told, the colors united and joined hands.

    From then on, when it rains, colors will stretch across the sky in a great bow of color.

    Whenever a rainbow appears in the sky, let us remember to appreciate one another.

    Do you know of anyone who uses the truth to deceive (欺骗) ? When someone tells you something that is true, but leaves out important information that should be included, he can give you a false picture.

    For example , some might say, "I just won a hundred dollars on the lottery (彩票) . It was great. I took that dollar ticket back to the store and turned it in for one hundred dollars! "

    This guy's a winner, right? Maybe, maybe not. We then discover that he bought $200 worth of tickets, and only one was a winner. He's really a big loser!

    He didn't say anything that was false, but he left out important information on purpose. That's called a half-truth. Half-truths are not technically lies, but they are just as dishonest.

    Some politicians often use this trick. Let's say that during Governor Smith's last term, her state lost one million jobs and gained three million jobs. Then she seeks another term. One of her opponents says, "During Governor Smith's term, the state lost one million jobs!" That's true. However, an honest statement would have been, " During Governor Smith's term , the state had a net gain of two million jobs. "

    Advertisers will sometimes use half-truths. It's against the law to make false statements so they try to mislead you with the truth. An advertisement might say, "Nine out of ten doctors advised their patients to take Yucky Pills to cure toothache. " It fails to mention that they only asked ten doctors and nine of them work for the Yucky Company.

    This kind of deception happens too often. It's a sad fact of life: Lies are lies , and sometimes the truth can lie as well.

    The students are having their chemistry class. Miss Li is telling the children what water is like. After that, she asks her students some questions, “Boys and girls! What is water? Can you tell me?" She waits for a few minutes, but no one answers her. Then Miss Li asks again. “Why don't you answer my question? I tell you what water is like, right?”

    Then a boy puts up his hand and says, “Miss Li, you tell us that water has no color and no smell. But I think that water is something that is black when I wash my hand in it.” All the students begin to laugh. Miss Li laughs too. Then another boy puts up his hand, Miss Li says “What do you think, Wang Bing?” The boy says:” Miss Li, where can we find water that has no color and no smell?”

    “Why do you say so?” Miss Li asks.

    “The water in the river behind my house is always black and it has a bad smell.” answers the boy. And most of the children think he is right.

 “I am sorry to hear that, children.” says the teacher. “Our water is getting dirtier. That is a problem. All of us must try our best to make it clean again.”

    I live a different life in every season. Life in the summertime is often full of pests. Like most Long Island homeowners, I want to ensure my suburban life with pest-free living. So it was with wide-eyed surprise that I greeted the smiling exterminator (灭虫者) who rang my bell.

    “We'll be serving your neighbors, Mike and Sarah (I'm not familiar with either one by name),” he waved in the other direction. “Since we'll have a team here tomorrow, we're offering a discount. ” He came out with numbers beginning from $299 then in seconds to $89.

    “You've probably been seeing the ant hills around.” he moved toward my front walkway and lawn. “And have you seen the bees that dig nests in the ground?” he continued with his head shaking up and down pushing me to do the same.

    “What we do is spray three feet out from your foundation and three feet up.” As he was talking, and without breaking eye contact, he opened his iPad cover and began operating at the screen to show me frightening images. “It also kills other pests, like spiders. It is the best pesticide (杀虫剂),” he said, pausing for effect.

    He then went into soft talk to close the deal, correctly foreseeing that I would be concerned about safety and the environmental impact on my vegetable garden, plants and our little patch of planet here on Long Island. “The products are environmentally responsible, safe with children and pets,” he said.

    I'm unkind when it comes to unwanted visitors entering on my out-of-doors moments. Any insect found in my house or on my deck is bound to be poisoned or pancaked.

    Unfortunately for the exterminator, just as I was considering buying the pesticide, Billy, my fearless husband, pulled into our driveway, which made me ask for a business card out of politeness instead.

    Fashions have a lot of rules. Most of them, however, are just wrong. But there's one rule that goes beyond tradition and into the field of scientific study of the brain: Black clothes are slimming. It all comes down to how your visual system processes the light. The below holes in each square are the same in size, yet the white hole looks bigger than the black hole.

    In the 1500s, Galileo Galilei noticed that some of the planets looked larger when viewed with the naked eye than they did when viewed through a telescope, making the white light of Venus appear eight to ten times larger than Jupiter in the night sky. He knew something strange must be going on with his vision to cause this illusion, but he wasn't sure what it was. Luckily, scientists never stopped wondering, and in 2014, they figured it out.

    Our visual system operates via two main channels: "on" neurons (神经元) that are sensitive to light things and "off" neurons that are sensitive to dark things. When it came to the dark "off" neurons, the researchers found that they responded predictably to dark shapes on a light background the greater the contrast between the two, the more active these neurons were. But the light on" neurons behaved unpredictably. Even with the same amount of contrast, light objects on a dark background caused a greater response in these neurons.

    This phenomenon makes some sense, evolutionarily speaking. In the dark of night, you'd want to be able to take in every bit of light you can get, so a visual system that enlarges light objects on a dark background could be very useful. However, it's not that hard to see dark objects in the light of day. It has some effects in the colors of your clothes and in the appearance of the planets—the brighter appearance of Venus in the night sky makes it look bigger than the darker Jupiter.

    Charity Cycling UK has recently launched a campaign to raise awareness of dooring after discovering that many people don't know what it is and those that do seem to think it's a joke. Dooring happens when a driver or passenger opens the door into another road user - typically a cyclist - without looking for other road users.

    Cycling UK's chief executive Paul Tuohy told Gloucestershire Live, "Some people seem to see car dooring as a bit of a joke, but it's not and can have serious consequences. Cycling UK wants to see great awareness made about the dangers of opening your car door, and people to be encouraged to look before they open."

    The charity says 2,009 of the 3,000 injuries were sustained(遭受) by cyclists, resulting in five deaths but says this might not be the full extent of the dangers.

    Cycling UK says not all car dooring incidents will be attended by police, so the charity has written to transport minister Jesse Norman calling for a public awareness campaign urging all drivers to look before opening vehicle doors. One of the ways that the charity suggests could prevent injuries through dooring is the "Dutch Reach", where people leaving a vehicle reach over and use the non-door side hand to open the door.

    Cycling UK also suggests serious laws and advice on safer road positioning for people who cycle.

    Mr Tuohy said, "In the Netherlands they are known for practising a method, known sometimes as the 'Dutch Reach', which we think could be successfully encouraged in the UK."

    "Cycling UK has written to the Department for Transport asking them to look into this, and stress the dangers of 'car dooring' through a public awareness THINK style campaign."

    If you're really concerned about opening a door into the path of a cyclist coming behind you, consider using what's known as the "Dutch Reach" to open the door. That will naturally turn you in your seat and give you a much better view of what's coming up alongside the car.