Ask three people to look out of the same window at a busy street corner and tell you what they see. {#blank#}1{#/blank#}(chance) are that you will receive three different answers. Each person sees the same scene, but each perceives something different about {#blank#}2{#/blank#}.

    Perceiving goes on in our minds. Of {#blank#}3{#/blank#} three people who look out of the window, one may say that he sees a policeman {#blank#}4{#/blank#}(give) a motorist a ticket. Another may say that he sees rush-hour traffic jam at the intersection. The {#blank#}5{#/blank#}(three) may tell you that he sees a woman trying to cross the street with four children. Perception is the mind's {#blank#}6{#/blank#}(interpret) of what the senses — in this case our eyes — tell us.

    Many psychologists today are working to try {#blank#}7{#/blank#}(determine) just how a person experiences or perceives the world around. Using a scientific approach, these psychologists set up experiments in  {#blank#}8{#/blank#} they can control all of the factors.  {#blank#}9{#/blank#} measuring and charting the results of many experiments, they are trying to find out what makes different people perceive  {#blank#}10{#/blank#}(total) different things about the same scene.

    Silk was not the only product to be transported along the Silk Road, {#blank#}1{#/blank#}other goods such as tea, medicinal herbs also being exported from China. Many merchants found instant wealth through the trade in luxury items．

    Rather than traveling the entire length of the Silk Road, each merchant traded goods along one section of the route, {#blank#}2{#/blank#} (buy) them in one town and then selling in another. The travelers and merchants also {#blank#}3{#/blank#} (carry) many ideas, philosophies and religions with them along the Silk Road. Of all these, Buddhism, {#blank#}4{#/blank#}came from India, had the greatest influence on Chinese culture. It{#blank#}5{#/blank#}(eventual) became China's primary faith, {#blank#}6{#/blank#}(widespread) than the original Chinese religions of Confucianism and Taoism．

    Silk Road trades traveled together in long caravans of camels. This mode of travel provided{#blank#}7{#/blank#}(protect) from robbers who might attempt {#blank#}8{#/blank#} (rob) the valuable goods being transported．The Silk Road was not only one single road, but{#blank#}9{#/blank#} whole collection of routes by which goods{#blank#}10{#/blank#} (transport) between the East and the West．

    Just How Buggy is Your Phone?

    What item in your home crawls with the most germs? If you say {#blank#}1{#/blank#} toilet seat, you're wrong. Kitchen sponges top the list. But cell phones are pretty dirty too. They contain around 10 times as many germs as toilet seats. People touch their phones, laptops, and other digital devices all day long, yet rarely clean them.

    In one incident, a thief paid a terrible price for stealing a germy cell phone. He stole it from a hospital in Uganda during a widespread of the deadly disease Ebola. The phone's owner reported the theft before {#blank#}2{#/blank#}(die)from the disease. Soon, the thief began showing symptoms and finally {#blank#}3{#/blank#}(confess)to the crime.

    {#blank#}4{#/blank#} in that unusual case a cell phone carried dangerous bacteria, not all germs are bad. Most cause no harm. In fact, they could provide helpful information. Look at the surface of your phone carefully. Do you see some dirty mars? “That's all you,” says microbial ecologist Jarrad Hampton-Marcell. “That's biological information.”

    It turns out that the types of germs that you apply all over your phone or tablet are different from {#blank#}5{#/blank#} of your friends and family. They're like a fingerprint that could identify you. Some day in the future, investigators may use these microbial fingerprints to solve crimes. Phones and digital devices may be one of the best places to look for buggy clues.

    In a 2017 study, researchers sampled a range of surfaces in 22 participants' homes, {#blank#}6{#/blank#} countertops and floors to computer keyboards and mice. Then they tried to match the microbial fingerprints on each object to its owner. The office equipment was easiest to match to its owner. In an {#blank#}7{#/blank#}(early)study, a different group of researchers found that they could use microbial fingerprints to identify the person who {#blank#}8{#/blank#}(use)a computer keyboard even after the keyboard sat untouched for two weeks at room temperature.

    One day, microbial signatures might show {#blank#}9{#/blank#} people have gone and what they have touched. They could prove {#blank#}10{#/blank#} an unmarked device is yours. So, sure, your phone is pretty germy. Does that inspire you, or does it just bother you?

    Modern-day robots are programmed to handle tasks that are normally carried out by humans. They are faster and{#blank#}1{#/blank#}(accurate) than human workers and never ask for a pay rise or take breaks!

    Robots are also able to work{#blank#}2{#/blank#}dangerous situations.

    Researchers at the University of Arkansas in the United States say that the mobile robots which have been created already are ideal for the job of hospital attendants. These mobile robots store a{#blank#}3{#/blank#}(detail) map of the hospital in their memory. The robots' sensors can detect{#blank#}4{#/blank#}(object) and quickly get out of the way. Although these robots cannot go up and down know how{#blank#}5{#/blank#}(press) a button of an elevator.

    Researchers at a Massachusetts' university are creating the first robot {#blank#}6{#/blank#}can constantly change its shape according to the task it has to do. These are called polymorphic robots. "Polymorphic" means{#blank#}7{#/blank#}ability to take different forms. A 3D printer{#blank#}8{#/blank#}(place) inside the robot to create the desired shape. The entire process of changing forms in this manner is called the rapid printing technology which is{#blank#}9{#/blank#}(fair) common in the car industry to produce complex 3D structures quickly. Once the robot has performed{#blank#}10{#/blank#}(it) task, it can be melted down and recycled into another useful part by the 3D printer.

Happiness Is an Attitude

    The 92-year-old confident and proud lady, who is fully dressed each morning by eight o'clock, with her hair fashionably combed and makeup perfectly applied, moved to a{#blank#}1{#/blank#}(nurse) home today.

    Her husband of 70 years recently passed away, {#blank#}2{#/blank#} (make) the move necessary.

    After many hours of waiting patiently in the hall of the nursing home, she {#blank#}3{#/blank#} (smile) sweetly when told her room was ready. As she got into the elevator {#blank#}4{#/blank#} her wheelchair, I provided a description of her tiny room.

    "I love it," she started with the enthusiasm of {#blank#}5{#/blank#} eight-year-old child having just been presented with a new dog.

    "Mrs. Jones, you haven't seen the room….just wait."

    "That has {#blank#}6{#/blank#} to do with it," she replied. "Happiness is something you decide on ahead of time. {#blank#}7{#/blank#}I like my room or not doesn't depend on how the furniture is arranged…it's {#blank#}8{#/blank#} I arrange my mind. I already decided to love it. It's a decision I make every morning when I wake up. I have a choice; I can spend the day in bed {#blank#}9{#/blank#} (recount) the difficulty I have with the parts of my body{#blank#}10{#/blank#} no longer work or get out of bed and be thankful for the ones working. Each day is a gift, and as long as my eyes open, I'll focus on the new day and all the happy memories I've stored away… just for this time in my life.”

Invented {#blank#}1{#/blank#} early twentieth-century America by Richard Drew, Scotch tape can be used to fix almost anything. However, there is more to this fix-it-all than just that. Sticky yet easily removed, Scotch tape was designed for use in painting cars—to mask off areas that should not {#blank#}2{#/blank#} (paint). The tape soon found other uses. During the 1930s, people didn't have much money, so they couldn't throw away damaged things; they had to repair them. Drew's painting tape became a popular, money-saving fix for everything from torn clothing to broken eggs. Since then, people {#blank#}3{#/blank#} (find) all sorts of creative ways to use the sticky tape.