On one such day,I was walking from class across the school to catch the school bus home,with my head down,fighting tears of total hopelessness,when a young man came down the sidewalk toward me.Though I had never seen him before,I did not want him to see that I was in such low spirits,so I turned my head away and hoped to hurry past.I thought he'd walk on by,but he moved until he was directly in front of me,waited until I looked up,and then smiled.

    Looking into my eyes,this stranger spoke in a quiet voice："Whatever is wrong will pass.You're going to be OK,just hang on."   He,then,smiled again and walked away.

    I can't explain the effect of that man's unexpected kindness and caring! He gave me the one thing that I'd lost completely—hope.I looked for him in our school to thank him,but never saw him again.

    That was thirty years ago.And I've never forgotten that moment.Over the years,whenever I see someone who is in trouble,I will always think of that young man and try to give a flash of hope in the dark wherever I can.I carry things for people when they are too heavy for them,sit with naughty babies in the waiting room while their mothers are busy,or talk to tired couples at the checkout line or it could be anything.

    If you keep your head up,your heart will show you the place that needs hope.

    While Jennifer was at home taking an online exam for her business law class, a monitor（监控器）a few hundred miles away was watching her every move.

    Using a web camera equipped in Jennifer's Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked — remotely — to prevent Internet searches, and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?

    In the battle against cheating, this is the cutting edge and a key to encouraging honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid — that students haven't just searched the Internet to get the right answers.

    Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of “open online courses”. Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.

    Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students' identities using personal information, such as the telephone number they once used.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

    A “virtual (虚拟的) cocktail” glass that lets you change the flavor (味道) of your drink using your Smartphone has been developed by scientists.

    Offering a customizable (定制的) range of drinks and tastes, the Vocktail can change a glass of water into a cocktail at the press of a button. The world's first technology tricks your brain into thinking it is experiencing a specific flavor by fooling your senses of sight, smell and taste.

    Developed by researchers at the National University of Singapore, the glass' three sensory components are controlled via a Smartphone App. Because the software can combine a number of smells, colors and tastes, the Vocktail can create almost any flavor.

    Developer Nimesha Ranasinghe said: “Our approach is to increase drinks flavor experience by overlaying outer sensory stimuli (刺激物). For example, in the Vocktail we overlay color, taste and smell sensations to create an adjustable flavor experience. Flavor is mainly how we feel food and that is achieved through the use of these senses. Therefore, by changing the color of the drink, using different smells and changing the taste through electricity, we are able to copy the flavor of a drink without it actually changing the liquid.”

    The glass houses three fragrance containers connected to micro-air pumps. The pumps release smell that change your feeling of the drinks, flavor. For example, a lemon fragrance will trick your brain into believing it is tasting lemon-flavored drink.

    On the outside edge of the glass are two electrode strips (电焊条) that send electric pulses into your tongue to stimulate your sense of taste and flavor differs with different pulses.

    You dash through a crowded railway station, tripping over bags, spilling (泼出) your coffee, only to have the doors slide shut in your face, leaving you breathless on the platform as the train pulls away,

    But at least, if you're in France, someone may be playing the piano for you. But it won't be performed by a paid musician, or even a street entertainer playing for coins. It will just be a random passer - by, jamming for the fun of it on one of the pianos that the national railroad company, S. N. C. F., has fixed in nearly 100 stations across France. They are free for anyone to play, and travelers from all walks of life have taken to doing just that.

    Gares & Connexions, the S. N. C. F. division that manages its stations, rents the instruments from the producer, Yamaha: which maintains them and tunes them every month or two. The first one was set up in the Gare Montparnasse in Paris in 2012.

    The music, mixed with the sounds of shouting passengers, screaming trains and rolling suitcases, gives French stations a special soundscape. The amateur musicians have included Irish soccer fans and even babies. In 2014, Gares & Connexions and Yamaha organized a nationwide contest called Your Turn to Play, asking participants to submit videos of themselves using one of the pianos. It drew nearly 900 entries.

    Isn't the railroad company taking a big chance? Apparently not: “None of the instruments has been vandalized to this day, or even merely damaged,” said Claire Foumon, a spokeswoman for Gares & Connexions. “They are shared and respected by all.”

    So if you miss a train in Paris; Bordeaux or Marseille one day, perhaps someone will be playing a favorite piece that will ease your pain. Or perhaps you'll sit down and play your annoyance away yourself.

    A few years ago, I took a sightseeing trip to Washington, D.C. Standing outside the Ronald Reagan Center, I heard a voice say, "Can you help me?" When I turned around, I saw an elderly blind woman with her hand extended. In a natural reflex, I reached into my pocket, pulled out all of my loose change and placed it on her hand without even looking at her. I was annoyed at being bothered by a beggar. But the blind woman smiled and said, "I don't want your money. I just need help finding the post office."

    In a moment, I realized what I had done. I judged another person simply for what I assumed she had to be. I hated what I saw in myself. This incident re- awakened my belief in humility (谦恭), even though I'd lost it for a moment.

    The thing I had forgotten about myself is that I am an immigrant. I left Honduras and arrived in the U.S. at the age of 15. I started my new life with two suitcases, my brother and sister, and a strong, serious-minded mother. Through the years, I have been a dishwasher, mechanic and pizza delivery driver among many other humble jobs, and eventually I became a network engineer.

    In my own life, I have experienced many open acts of prejudice (偏见). I remember a time, at age 17 — I worked as a waiter, and I heard a father tell his little boy that if he did not do well in school, he would end up like me. I have also witnessed the same treatment of my family and friends, so I know what it's like, and I should have known better.

    But now, living in my American middle-class lifestyle, it is too easy to forget my past, to forget who I am and where I have been, and to lose sight of where I want to be going. That blind woman on the streets of Washington, D.C., cured me of my blindness. She reminded me of my belief in humility and to always keep my eyes and heart open. By the way, I helped that lady to the post office. And in writing this essay, I hope to thank her for the priceless lesson.

Columbia Engineering's Summer High School Academic Program for Engineers (SHAPE) is a selective pre-college program for high school students and recent graduates. SHAPE is tailored for students with a gift for STEM: science, technology, engineering, and mathematics. Each 3-week session offers college-level, project-based courses in engineering taught by celebrated professors at the university. 

SHAPE gives students a more realistic picture of what it means to be an engineer and its professional development components help students develop the skills they need to get there.

Courses

SHAPE features creative problem-solving courses and exposes students to innovative engineering techniques and knowledge presented by professors. Please note that SHAPE does not provide college credit. 

Students gain access to the famous MakerSpace and state-of-the-art research laboratories after completing the safety training and will only do so under close guidance. 

SHAPE also provides students with workshops to explore career fields, professional development, and guidance on sharpening one's college application from admissions officers. Students in the program will be visiting companies and organizations that show the classroom content in practice. 

Application

Students are selected based on the following criteria: 

⒈Strong academic record 

⒉Personal statement to demonstrate excitement and interest in STEM through engagement in challenging courses, activities, projects, etc. 

⒊Enthusiastic letter of recommendation submitted by a math or science teacher 

⒋Creative responses to two required questions and one of the three optional questions 

We encourage all students to apply by the priority deadline of June 15, 2023, so there is no application fee. After the priority deadline, a $50 application fee is required. 

SHAPE is dedicated to supporting students and their families in need of financial assistance. We offer a limited number of need-based scholarships, which cover the full cost of SHAPE. To be considered for a need-based scholarship, families will need to provide a recent pay receipt and complete a Family Income and Expense Worksheet.

Email: shape@columbia.edu for more information.