Augusto Esquivel is a sculptor who, in his own words, is “crazy with comparisons of reality and potential and the balance between them.” Perhaps the best example of what he's talking about are his most famous creations: the suspended(悬挂的) button sculptures.

Made entirely from buttons hanging on various lengths of string, Esquivel's sculptures are made to look like common objects: a piano, a gumball machine, and even a toilet. If it wasn't for the clear string hanging above, these objects, these sculptures, would look solid, yet you can put your hands right through them. The process starts with him deciding on a subject and setting the acrylic （丙烯酸树脂）from where the buttons are being suspended. He buys buttons of different shapes and sizes, paints them with spray paint, and carefully hangs them. After that, it's a manner of hanging each individual button, which takes a lot of time. For his piano, for example, he individually hung over 60 pounds worth of tiny buttons.

Esquivel's sculptures, while mostly housed inside art galleries, perfectly capture one of the main principles of street art: something that is eye-catching and something that invites interaction. Often the best sculptures outside the art galleries aren't the ones behind guards and fencing, but the ones people can go right up to and touch. In Vancouver, a series of laughing old men are attracting people for pictures and to just generally hang around, but the people who simply walk by and see the sculptures almost always leave with a smile on their face. That's good street art: it draws the viewer in rather than relying on a gallery to draw in an audience and point them to certain pieces.

Esquivel's art is not only a presentation of talent, something that mentions larger philosophical questions, like the ones he stated above, but also just the right combination of interesting idea and painstaking work. One can look at his work in a critical way, or simply appreciate his idea and execution(艺术品的制作).

    Are you interested in hi-tech products? Here are some that you might find at the market pretty soon.

    CX-1

    Tired of dragging your bag through busy airports? Then you might want to consider CX-1. The smart suitcase uses facial recognizing software to follow its owner as he / she is checking in or heading to the gate. Though CX-1 can only move at a speed of up to seven miles per hour, a tiny tool enables owners to keep track of the suitcase's location. It is expected to be sold on the market by late 2018.

    Aibo

    Sony's latest version of the Aibo robotic dog is almost as fun as the real thing—but much less work. The pet dog can recognize its owner, obey several commands, and even recall the behavior that pleases its master the most. Aibo can also learn new tricks, take photographs, and over time, develop its own unique personality.

    Forpheus

    Forpheus, an “athletic” robot developed by Japanese technology company Omron. It teaches users how to play ping-pong. The 10-feet-tall machine uses a camera and artificial intelligence to track the ball's speed and can predict the ball's direction correctly. The smart Forpheus can also quickly test its player's abilities and adjust the playing level, making the game fun.

    Black Box VR

    Though many people determine to go to the gym once a week, few reach their goal. Black Box VR wants to change that by turning hard exercise into fun video games. Using it, gym users will find themselves fighting enemies, including big creatures—all while getting exercise.

    How does a sunset work? We love to look at one, but Jolanda Blackwell wanted her eighth-graders to really think about it and question.

    So Blackwell had her students watch a video of a sunset as part of a physics lesson on motion. "I asked them: ' So what's moving And why' " Blackwell says. Some thought the sun was moving; others knew that a sunset is the result of the Earth spinning around on its axis. "Usually, my biggest challenge is trying to keep them patient," she says. "They just have so many burning questions."

    "Every day, we meet new information," says Charan Ranganath, a psychologist. Ranganath was curious to know why we keep some information and forget other things. So he got 19 volunteers and asked them to review more than 100 questions. When the participants' curiosity was aroused, the parts of' their brains that regulate pleasure and reward lit up. Curious minds also showed increased activity in the brain, which is involved in greater memories.

    "Curious brains are better at learning not only about the subject at hand but also dull information. This is a phenomenon teachers can use in the classroom," says Evie Malaia, a professor. "Say a kid wants to be an astronaut," she says. NL Well, how do you link that goal with learning multiplication tables(乘法表)" "A teacher may choose to ask her class an interesting word problem that involves space exploration," Malaia says. Students may remember the answer to the word problem, but they'll also remember how they found the answer through multiplication.

    What Ranganath wants to know most is why some people seem naturally more curious than others. Lots of factors, including stress, aging and certain drugs  affect dopamine(多巴胺) processing in the brain. "If we could figure these things out, we could help those who may just seem bored," Ranganath says.

    Blackwell says she doesn't have to deal with that problem too often. She says her students love exploring the mysterious unknowns in science: What happens when a car crashes. How do rainbows work "I tell my kids there's no dumb questions," Blackwell says. "That's science: asking questions and seeking answers."

    Google previously announced successful tests of machine learning systems designed to assist doctors. In one case, Google reported AI had examined eye diseases with equal accuracy to doctors. Other tests showed that machine learning can be used to study large amounts of patient data to predict future medical events.

    Now the company has published two new studies showing a high level of success in identifying metastatic breast cancer. Metastatic means that cancer has spread from its main area to other parts of the body. Metastatic breast cancer is one of the deadliest, causing about 90 percent of all breast cancer deaths worldwide.

    In metastatic breast cancer patients, the cancer often travels to nearby lymph nodes（淋巴结）. Usually doctors examine lymph node tissue under a microscope to see whether cncer is present Google notes that previous studies have shown that up to one-fourth of metastatic lymph node classifications end up being changed after a second examination. In addition, studies show that small metastatic material can be missed up to 67 percent of the time when examinations happen under extreme time restrictions.

    Google says it created a mathematical algorithm(算法).The algorithm, called Lymph Node Assistant, is trained to find characteristics of tissue affected by metastatic cancer. When the system examined tissue images (图像), it was able to differentiate between metastatic cancer and non-cancer 99 percent of the time. In addition, the Lymph Node

    Assistant is highly effective at finding the positions of the cancers. Some of these positions would be too small for doctors themselves to identify. The research also showed that the algorithm method can reduce the usual time needed to examine the disease by about 50 percent.

    But Google makes clear the Al-based system is not meant to replace the work of medical professionals. Instead, it is designed to reduce the number of false identifications and help doctors work faster and more effectively.

Hope is the most powerful motivational force that helps people to overcome adversities. {#blank#}1{#/blank#}, you need a guiding force to keep you moving toward your goals. Hope keeps you on your feet and makes you much stronger. 

Hope is your strength and inner faith in the battle of your life. {#blank#}2{#/blank#}, you lose everything. You do hard work and make a great effort to succeed in life but fail. That makes you upset and depressed. You do not know what to do. At that time hope comes to your rescue and gives you encouragement. {#blank#}3{#/blank#}.

Hope increases the productivity, efficiency and creativity in people. A hopeful person who stays positive and enthusiastic can succeed in any field of his choice. {#blank#}4{#/blank#}. The best service we can do to people is giving hope to the hopeless. 

{#blank#}5{#/blank#}? Yes, hope gives meaning to life as without hope there is no reason to live. Give hope to people and they will become more creative and more productive. Hope is vital to the life of every person. Besides, hope is necessary not only for life but also for living a healthy life. Hope is the best medicine that keeps away miserable tension, depression, high blood pressure and other health problems. I had two big heart attacks and while at the edge of death, I had hope that I would survive. And the hope of getting well kept me alive.

A. A hopeless person is a failed person who can never succeed in life

B. Have you ever lost hope and felt sorry for yourself

C. Since you're full of hope for the future

D. You try one more time and succeed

E. In the ups and downs of life

F. Is hope necessary for life

G. If you lose hope

"YOLO"(热辣滚烫), coming out in China on the first day of the Lunar New Year holiday, {#blank#}1{#/blank#} (direct) and starred by Jia Ling, China's female filmmaker. She plays the role of Le Ying, an unemployed woman in her{#blank#}2{#/blank#}(thirty) who still lives with her parents until one day, she{#blank#}3{#/blank#} (fortune) meets a boxing coach(by Lei Jiayin).

Jia's first feature was "Hi, Mom," an {#blank#}4{#/blank#}(inspire) film in which a young woman,{#blank#}5{#/blank#}mother has been seriously injured in a car accident, travels back to the early 1980s.There, she forms an incredibly close bond with the{#blank#}6{#/blank#}(young) version of her mother and works on giving her mother a better life than before.

{#blank#}7{#/blank#}(release) at the China box office during the Lunar New Year holiday period three years ago, "Hi, Mom" earned a massive RMB5.41 billion. That made{#blank#}8{#/blank#} the world's top-grossing movie directed by a solo female{#blank#}9{#/blank#}it was overtaken by "Barbie" last year.

Sony recently made an{#blank#}10{#/blank#}(announce) about the English remake rights to "Hi, Mom," which is currently in development.