Is there a magic cutoff period when offspring become accountable for their own actions? Is there a wonderful moment when parents can become spectators (旁观者) in the lives of their children and shrug, "It' s their life," and feel nothing?

    When I was in my twenties, I stood in a hospital corridor waiting for doctors to put a few stitches in my son's head. I was asked, "When do you stop worrying?" A nurse said, "When they get out of the accident stage." My mother just smiled faintly and said nothing.

    When I was in my thirties, I sat on a little chair in a classroom and heard how one of my children talked incessantly, disrupted (打断) the class, and was headed for a career making license plates. As if to read my mind, a teacher said, "Don't worry. They all go through this stage, and then you can sit back, relax, and enjoy them." My mother listened and said nothing.

    When I was in my forties, I spent a lifetime waiting for the phone to ring and the cars to come home, the front door to open.

    My friends said that when my kids got married I could stop worrying and lead my own life. I wanted to believe that, but I was haunted by my mother' s wan ( 淡淡的 ) smile and her occasional words, "You look pale. Are you all right? Call me the minute you get home."

    Can it be that parents are sentenced to a lifetime of worry? Is concern for one another handed down like a torch to blaze the trail of human frailties and the fears of the unknown? Is concern a curse? Or is it a virtue that elevates us to the highest form of life?

    One of my children became quite irritable recently, saying to me, "Where were you? I've been calling for three days, and no one answered. I was worried!!!"

    I smiled a wan smile.

    Let's face it. No one drinks diet sodas for the taste. People drink diet sodas in the hope that it will help them lose weight or at least keep them from gaining it. Yet it seems to have exactly the opposite effect, according to a new study.

    Researchers from the University of Texas said those who drank two or more diet sodas a day had waist size increases that were six times greater than those who didn't drink diet sodas. ＂What we saw was that the more diet sodas a person drank, the more weight they were likely to gain,＂ said Sharon Fowler.

The study was based on data from 474 participants in a large, ongoing research project, where the participants were followed for nearly 10 years.

    While the findings are surprising, they also offer some explanations.

    Nutrition expert, Melanie Rogers, who works with overweight patients in New York, has found that when patients are switched from regular to diet sodas, they don't lose weight at all. ＂We weren't seeing weight loss necessarily, and that was confusing to us,＂ said Rogers.

    So why would diet soda cause weight gain? No one knows for sure yet, but it could be that people think they can eat more if they drink diet sodas, and so over-compensate for the missing calories.

    A related study found some sweeteners (甜味剂) raised blood sugar levels in some mice. ＂Data from this and other potential studies suggest that the promotion of diet sodas and artificial sweeteners may be risky,＂ said Helen P. Hazuda, professor at the University of Texas's school of medicine. ＂They may be free of calories, but not of consequences.＂

    With Disney parks recently raising their ticket prices to $89 now is the perfect time to start thinking about smaller, regional theme parks. Here are four theme parks where the daily price of adult admission is under $50.

    Luna Park, Coney Island, NY.

    How much you spend in enjoying Luna Park really depends on which rides you choose to go on. For anyone as indecisive as I am, stick with the $29 four-hour Unlimited Luna Park Ride Wristband or the $39 Ride and Play package, a four-hour unlimited ride wristband that comes with a $20 game card.

    Dorney Park, Allentown, PA.

    Dorney Park is a popular theme park located about an hour outside of Philadelphia. Kids love Planet Snoopy, a fun area with attractions centered around the lovable Snoopy. Adult tickets are available online for $39.99 (or at the gate for $49.99) and kids are $27.99 online or ($29.99 at the gate). You can also buy a Starlight Admission ($27.99 online or at the gate), good for visits between 5 p.m. and 10 p.m. during the summer months when the park is open late, or from 3:30 p.m. to 8 p.m. when the park closes earlier.

    Knotts Berry Farm, Buena Park, CA.

    Home to some of the country's craziest rides, Knotts Berry Farm also has calmer, more family-friendly rides. Ages 12-61 get in for $39.99 when tickets are bought online, while children ages 3-11 and adults over 62 pay $26.99.

    Santa Cruz Boardwalk, Santa Cruz, CA.

    Sitting on the warm beaches of Santa Cruz — about 90 minutes south of San Francisco — the Boardwalk is home to big roller coasters, mini-golf, enough food and games to keep people of all ages busy. The best part? An all-day unlimited rides wristband is only $31.95.

    Like many other people, I love my smart phone, which keeps me connected with the larger world that can go anywhere with me. I also love my laptop, because it holds all of my writing and thoughts. In spite of this love of technology, I know that there are times when I need to move away from these devices and truly communicate with others.

On occasion, I teach a course called History Matters for a group of higher education managers. My goals for the class include a full discussion of historical themes and ideas. Because I want students to thoroughly study the materials and exchange their ideas with each other in the classroom, I have a rule —no laptop, iPads, phones, etc. When students were told my rule in advance of the class, some of them were not happy.

    Most students assume that my reasons for this rule include unpleasant experiences in the past with students misusing technology. There's a bit of truth to that. Some students assume that I am anti-technology. There's no truth in that at all. I love technology and try to keep up with it, so I create to my students.

    The real reason why I ask students to leave technology at the door is that I think there are very few places in which we can have deep conversions and truly engage complex ideas. Interruptions by technology often break concentration and allow for too much dependence on outside information for ideas. I want students to dig deep within themselves for inspiration and ideas. I want them to push each other to think differently and make connections between the course materials and the class discussion.

    I've been teaching my history class in this way for many years and the evaluations reflect students' satisfaction with the environment that I create. Students realize that with deep conversation and challenge, they learn at a level that helps them keep the course materials beyond the classroom.

    I'm not saying that I won't ever change my mind about technology use in my history class, but until I hear a really good reason for the change, I'm sticking to my plan. A few hours of technology-free dialogue is just too sweet to give up.

    There were no people on the park bench as I sat down to read beneath the branches of an old willow tree, with good reasons to sigh, for the world was dragging me down. At this time, a boy approached me. He stood right before me, and said with great excitement, “Look what I found!”

    In his hand was a flower, and what a pitiful sight, with its petals (花瓣) all worn. Wanting him to take his flower and go off to play, I managed a smile and then turned to the other side.

    But instead of leaving, he sat next to my side and placed the flower to his nose and said firmly and clearly, “It really smells pretty and it's beautiful, too. That's why I picked it. Here it's for you.”

    The flower before me was dying or dead. But I knew I must take it, or he might never leave. So I reached for the flower, and replied, “Just what I need.”

    But instead of placing the flower in my hand, he held it in mid-air. It was then that I noticed that the boy was blind.

    I heard my voice quiver (轻微颤抖), and at the same time my tears shone like the sun. As I thanked him for picking the very best one, he smiled and said, “You're welcome.”

    And then he ran off to play, not knowing the influence he'd had on me.

    I sat there and wondered how he managed to see a self-pitying woman beneath an old willow tree. Perhaps from his heart, he'd been blessed with true sight.

    Through the eyes of the blind boy, I could see the problem was not with the world; the problem was me. And for all of those times I had been blind. From now on, I promised to see beauty and appreciate every second. Then I held the flower up to my nose and breathed its fragrance and smiled as that young boy.

    My first visit to London was one and a half years ago. It was a wonderful trip. I stayed in the city for three weeks, and I had many impressions. I visited all the famous places. I'd like to tell you about some of the places I visited in this beautiful city.

    First, I went to the Tower of London, and I want to say that it is a very interesting historical place. I found out that a long time ago, it was a prison. Later it became a castle for the royal(皇家的) family. Or maybe it is the reverse; I'm not sure, but later they left this place and lived in Buckingham Palace and Kensington Palace.

    I also enjoyed visiting the House of Parliament and Westminster Abbey, two very popular places for tourists. They are very old and beautiful. The Abbey is built in a kind of Gothic style; it is fantastic.

    In London, you can also enjoy nature. There are many parks such as Hyde Park, Green Park, and Holland Park. These parks are wonderful green, quiet places where you can relax and escape the noise of the city.

    Trafalgar Square is a popular place for students and other young people. You will find lots of pigeons(鸽子) there. If you have time, you can feed them and they will be very happy. You can buy special food for them, but be careful! Tons of birds are going to surround you if you feed them.

    Another special place in London that I like is St. Paul's Cathedral which was designed by Sir Christopher Wren. I also was impressed with the museums in London. They're very popular. I found them interesting because you can learn about the history of England.

    I had a wonderful time in London. I really liked it because it is a city that is rich in history.