If you thought pilots dimmed（调暗）the lights before takeoff to give you some shuteye, think again. Believe it or not, the dim lighting could actually help save your life in case of a plane emergency.

    The dimmed lights before taking off the runway and landing are a flight precaution used to help passengers' eyes adjust quicker during an emergency escape. “Going from a brightly lit environment to one that's completely dark would require some time for our eyes to focus and see the escape slide,” Alice Theriault, service director for Air Canada wrote in a press statement. “Since we need to have all the seconds on our side in the event of an emergency, dimming the lights is one of many steps we take to ensure the safety of our customers.”

    The phenomenon that your eyes see those strange speckles (小斑点) as your sight adjusts to a dark place after being in a light place is called dark adaptation. It normally takes our eyes about 20 to 30 minutes to see best in a dark room. The brighter the lights, the longer it takes for our eyes to adjust, which is why dimming the plane lights could shorten your “dark adaptation” time since you haven't been sitting under fluorescent bulbs (荧光灯) all flight.

    Not only does dimming lights add valuable time to the escape process, it reduces the tension on your eyes if you need to look outside, or see the emergency lighting along the passage. “It helps keep you in the right direction.” Patrick Smith, an airline pilot and author of Cockpit Confidential told The Telegraph. “It also makes it easier for flight attendants to assess any outside risks, such as fire or debris, that might affect an escape.” So next time a pilot dims the lights, just know it's for your safety, even though it creates a gentle atmosphere for your takeoff into the sky.

    Low-Cost Gifts for Mother's Day Gift

    Gift No. I

    Offer to be your mother's health friend. Promise to be there for any and all doctor's visits whether a disease or a regular medical check-up. Most mothers always say “no need,” another set of eyes and ears is always a good idea at a doctor's visit. The best part ? This one is free.

    Gift No. 2

    Help your mother organize all of her medical records, which include the test results and medical information. Put them all in one place. Be sure to make a list of all of her medicines and what times she takes them. “Having all this information in one place could end up saving your mother's life,” Dr. Marie Savard said.

    Gift No. 3

    Enough sleep is connected to general health conditions. “Buy your mother cotton sheets and comfortable pillows to encourage better sleep,” Savard said. “We know that good sleep is very important to our health.”

    Gift No. 4

Some gift companies such as Presents for Purpose allow you to pay it forward this Mother's Day by picking gifts in which 10 percent of the price you pay goes to a charity (慈善机构). Gift givers can choose from a wide variety of useful but inexpensive things —- many of which are “green” —- and then choose a meaningful charity from a list. When your mother gets the gift, she will be told that she has helped the chosen charity.

    Riverside presents

    Sharp Short Theatre

    This competition offers students a rare experience of working in a professional theatre.

    Now in its fourth year of providing an opportunity for new writers, directors and performers to exercise their creative ability, Sharp Short Theatre has fast become one of the most exciting parts of the Riverside year. All entries（参赛作品）perform in a heat and then the best pieces are invited to perform in the final, where students can be awarded prizes in four types including writing, performing, directing and overall.

    Entries must be written and directed by students (18 years old and under) and can be up to at most 10 minutes in time length. Entries must be handed in by a producer, for example a parent, teacher or responsible adult 18 years old or over.

    Sharp Short Theatre is a youth arts pioneer focusing on encouraging the works of students in theatre. Its aim is to unearth and develop the young to be Australian theatre professionals.

    So what are you waiting for? Get into the spirit and register（注册）now.

    Advisory Service:

    Students may hand in their plays for review by a professional playwright（剧作家）in the lead-up to this event.

    Price: ＄30 per play.

    Deadline（截止日期）: 21 March, at 5 pm, 2018.

    Registration:

    To register, click here to complete our online form （one form per entry）.

    Entries Close: 11 April, at 5 pm.

    Price:＄15 per entry.

    Dates & Times:

    Heats: 21-24 May, at 7:30 pm.

    Final: 8 June, at 7:30 pm.

    Price:

    Heats: Adult ＄18, kids under 18 ＄12.

    Final: All tickets ＄20.

The Young Scholars Program

    The University of Maryland's Young Scholars Program is a perfect summer camp for academically talented teenagers who want to earn college credits, pursue academic interests or discover college life at the University of Maryland. The program is challenging and rewarding. Students have the opportunity to show that they can be successful in a university environment.

    The Activities

    During three weeks of exploration, teens preview the university experience, study with students who share similar interests and communicate with the best teachers of the University of Maryland in a dynamic and challenging classroom environment. Students can have trips to nearby Washington, DC and enjoy movie nights and activities at the student union. Workshops and seminars featuring speakers in academic fields further enrich the learning experience.

    The Courses

    The Young Scholars Program offers college courses that are at the cutting edge of theory, thought and technology. Classes generally meet every day from Monday to Friday. The program is a great introduction to the University of Maryland, Participants can benefit from the University of Maryland's vast resources, including libraries, computers and instructional labs.

    The Rewards

    Upon program completion, teens will go home with better preparations for the college experience—both academically and socially. In addition, students earn three college credits that post to the University of Maryland transcript (成绩单).

    The Application

    The application process includes submission of the application, high school transcript and a letter of recommendation.

    Ages: 14-18

    Mailing address: The University of Maryland College Park

    For more information, call 3014057762.

    A Christmas Carol was written by Charles Dickens. The first 6,000 copies of the book were sold out in a week. And the book has inspired many plays and movies. The first play was put on in 1844. The first two movies were silent films made in 1901 and 1908. Since then, the story has been remade more than 60 times for television and cinema. What makes such a tale so attractive? Audiences have always loved a good plot, a villain(反面人物) who harms other people or breaks the law, and the ending of right over wrong. The book offers all three.

    The book tells the story of a man named Ebenezer Scrooge. He is mean and cruel(残忍的) to his clerk and turns away his only living relative. One night, Scrooge is visited by three spirits. The first shows scenes from Scrooge's youth that led to this present state. The second takes him to the homes of his clerk and his nephew. Here Scrooge sees that people can be happy without lots of money. The spirit also shows him the desperate poor people of London. The third spirit shows Scrooge will die alone, and no one will care if he continues to live as he has. At last the message is understood, and Scrooge repents. He becomes generous and caring to all around him, especially to his clerk's sick son, Tiny Tim.

    Every year, thousands of people watch A Christmas Carol. Why? They may be touched by its lessons on the true meanings of wealth and happiness. They may enjoy the special effects and feelings or watching every year may be just a habit. Viewers never seem to grow tired of the old miser(守财奴), Scrooge, and his dramatic message of hope and change.

     At one time, computers were expected largely to remove the need for paper copies of documents because they could be stored electronically. But for all the texts that are written, stored and sent electronically, a lot of them are still ending up on paper.

     It is difficult to measure the quantity of paper used as a result of the use of Internet-connected computers, although just about anyone who works in an office can tell you that when email is introduced, the printers start working overtime. "I feel in my bones this revolution is causing more trees to be cut down," says Ted Smith of the Earth Village Organization.  

     Perhaps the best sign of how computer and Internet use pushes up demand for paper comes from the high-tech industry itself, which sees printing as one of its most promising new markets. Several Internet companies have been set up to help small businesses print quality documents from a computer. Earlier this week Hewlett-Packard Co. announced a plan to develop new technologies that will enable people to print even more so they can get a hard copy of a business document, a medical record or just an online email, even if they are nowhere near a computer. As the company sees it, the more use of the Internet the greater demand for printers.

     Does all this mean environmental concerns have been forgotten? Some activists suggest people have been led to believe that a lot of dangers to the environment have gone away. "I guess people believe that the problem is taken care of, because of recycling," said Kelly Quirke, director of the Rainforest Action Network in San Francisco. Yet Quirke is hopeful that high-tech may also prove helpful. He says printers that print on both sides are growing in popularity.

     The action group has also found acceptable paper made from materials other than wood, such as agricultural waste.