If you need glasses to read this, you are among the majority of Chinese students. That's because most students in China are short-sighted which means they can only see things close up and distant things will be blurry. Four-fifths of high school students wear glasses and now more and more children in primary school need glasses, too.

    This epidemic of poor eyesight has two very simple causes: too much time spent indoors studying and too little time spent outdoors playing. Reading and writing for hours and hours, sometimes in poorly lighted rooms, causes eyesight to weaken. But students have to do this because there is so much pressure on them to succeed in school. And because they spend so much time indoors at school and at home, they have less time to spend outdoors enjoying the sun.

    The sun, as a consequence, is important in developing good eyesight. Exposure to daylight releases a chemical in the eyes that prevents, or at least delays, short-sightedness. According to a study by Ian Morgan of Australian National University, Australian children and Chinese children have the same level of eyesight before they start school, but once they enter primary school, Chinese children only spend about an hour a day outside, while Australian children spend three to four hours each day in the sunshine. The result is that while about 40 percent of Chinese primary school students need glasses, only three percent of Australian children do.

    Wearing glasses may not seem like a big deal. For some, wearing glasses can even be an opportunity to make a fashion statement. But poor eyesight at a young age can have serious long term consequences. As you get older, your eyesight can worsen and lead to things like macular degeneration(黄斑变性), a condition of the eyes for which there is no cure and which can eventually lead to blindness.

    With all that in mind, don't you think it's time to give your eyes a break? Try spending a little less time inside and go for a walk in the park, instead. It's the healthy thing to do and your eyes will thank you for it.

根据短文理解，选择正确答案。

    Love it or hate it, there is no escape from Internet slang(俚语).

    This is especially true among young people in some English-speaking countries such as Australia, the UK and the US. These days, if they haven't caught up with the latest popular Internet slang, chances are that they often feel behind the times.

    Take these posts by The Washington Post for example: “David Bowie dying is totes tradge” and “When Cookie hugged Jamal, it made me totes emosh. ”

    What on earth do these mean? Well, “totes” is a short form of the adverb “totally”. Likewise, “tradge” means “tragic” and “emosh” means “emotional”.

    It seems that, for millennials (those born between the early 1980s and late 1990s), typing in this abbreviated form is not only time-saving but also in.

    Many millennial slang words are formed by what linguists(语言学家) call the practice of  “totesing” —the systematic abbreviation of words, according to a recent article in The Washington Post.

    Some people think that millennial slang affects the English language negatively. However, Melbourne University linguist Rosey Billington doesn't agree.

     “When you are able to use language in a creative way, you show you are linguistically knowledgeable because you know the language rules well enough to use words in a different way.” Billington told News.com.au.

    Her view is supported by two linguists, Lauren Spradlin and Taylor Jones, from the City University of New York and the University of Pennsylvania respectively. The two believe that totes-speak is a highly-organized system that can only be used by speakers who have mastered English pronunciation.

    The ability to break apart syllables(音节) and mix different sounds together is key. “Totesing is about sounds, and it follows the sometimes-complex sound system of English,” Jones told The Washington Post. “Totesing is considered random by some people, but it's not true. Instead, it has strict rules to follow. You need to be very fluent in the English language to be able to understand totes-speak. ”

    Winters are long and unforgiving in North Dakota. The winter of 1996 was especially brutal. It was a hard time in my own life too, A neck injury had kept me flat in bed for nearly a year. “Just in time for Easter,” my husband, Dick, said. But how could I feel the joy when the snow was four feet deep and I had months of painful physical treatment ahead?

    I was doing the dishes one day, feeling hopeless when there was a tap against the glass. It was a branch of the troublesome cottonwood (棉白杨).Back in the fall of 1979, it was a new subdivision (分支) then, an eight-foot stick. The people who'd briefly occupied the house before us had placed the pipe from the pump next to it. The earth was so wet that the poor thing had fallen down, most of its bare root system pointing skyward, and blowing hopelessly back and forth in the cold wind. Dick decided to pull it out one day, but I disapproved of it.

    “Look at how hard it's trying!” I said, pointing to the way it strongly kept hold of the earth. “It deserves a chance.”

    Dick borrowed some tools. We packed dry soil around the tree and put up some stakes (桩) into the ground, making it stand upright. That winter was still terrible. Surprisingly, in the spring my “rescue stick” put forth a few leaves, then with lots of branches. The year after that, we were able to remove the stakes. By the 1990s that little stick was a giant, towering over the house.

    Now the tapping at the window continued, louder as the wind picked up, almost as though to tell me to look up. At last, I did. I caught ray breath. In the window against the icy blue sky, thousands and thousands of fresh red buds were waving in the wind.

    The tree was bursting with life and I had a wonderful Easter.

Letter One

Dear Editor,

    After I finish my homework, I often go online and chat with my friends. Sometimes I play computer games. But my parents hate to see me playing games on the computer. Maybe they have heard too much news about how QQ and computer games harm children. Once I went to a net bar(网吧) to play games after school. But after that I told my parents that I was playing basketball at school. I said so because I didn't want to make them unhappy. I feel bad about it. However, I need to rest for a while by playing computer games after studying for a long time. I really want my parents to understand that. Do foreign parents do the same to their children? Please help me.

Li Ping,

Beijing

Letter Two

Dear Li Ping,

    I don't think it's strange for parents to keep their children away from anything bad. Foreign parents will do the same as your parents! They may not let their children watch TV for too long a time, or like your parents, they don't want their children to play computer games.

    Talk to your parents and be honest to them, I think. Tell them what you are doing and why you are doing so to make them understand you. It's never good to do things behind your parents. They aren't fools as you think sometimes! Our parents seem to know what is the best for us.

Remember: to be honest is the best way.

Good luck,

Rebecca

    Forty-three years seems like a long time to remember the name of a mere acquaintance. I have forgotten the name of an old lady who was a customer on my paper route. Yet it seems like just yesterday that she taught me a lesson in forgiveness.

    On a Saturday afternoon, a friend and I were throwing rocks onto the roof of the old lady's house. The object of our play was to observe how the rocks changed to missiles （导弹）as they rolled to the roof's edge and shot out into the yard like comets （彗星）falling from the sky. I found myself a perfectly smooth rock and sent it for a ride. However, it slipped from my hand as I let it go and headed straight for a small window. At the sound of crashed glass, we knew we were in trouble and ran away.

    A few days later, when I was sure that I hadn't been discovered, I started to feel guilty for her misfortune. She still greeted me with a smile each day when I gave her the paper, but I was no longer able to act comfortably in her presence. I made up my mind to save my paper delivery money, and in three weeks I had the seven dollars that I calculated would cover the cost of her window. I put the money in an envelope with a note, and put the envelope through the letter slot in her door.

    The next day, I handed the old lady her paper and was able to return the warm smile that I was receiving from her. She thanked me for the paper and said, “Here, I have something for you.” It was a bag of cookies. I thanked her and began to eat the cookies as I continued my route.

    After several cookies, I felt an envelope and pulled it out of the bag. When I opened the envelope, I was surprised. Inside were the seven dollars and a short note that said, “I'm proud of you.”

    Kinder Camp

    This is a week-long camp, Monday through Friday, for children from three years old to those entering first grade in the fall. Early childhood educators guide your child through activities including songs, games, stories and walks in the woods. Daily themes include dirt, furry animals, insects and more! Parents sign up to bring a snack (小吃).Choose from either morning or afternoon sessions, from June 9 to July 1& 2019.

    Kids Camp

    Children explore all day in the natural world. Art, music, cooperative games and hikes through the woods are some of the activities in this fun-filled week. Each grade level has its own camp program especially designed with the campers5 interests in mind.

    Camp takes place Monday through Friday, 9 am to 3 pm.

    Level 1 (completed 1st grade): July 28 to August 1, 2019.

    Level 2 (completed 2nd grade): August 4 to 8 2019.

    Level 3 (completed 3rd grade): August 11 to 15, 2019.

    Please note: children must bring their own lunches.

    Outdoor Expeditions

    Send your child on a traveling adventure. Teenagers will investigate the natural, cultural and historical facts that make their hometown a great city. Activities will include unique field trips and tours.

    Outdoor Expedition: from 9 am to 3 pm, August 11 to 15, 2019.

    Please note: children must bring their own lunches.

    Rainbow Camp

    Campers enjoy all kinds of activities including arts and crafts, music and singing, drama, active games, cooking and a host of special events that go with our theme weeks! Special guests are invited to the camp every week to entertain our campers and may include storytellers, musicians and magicians.

Week-long camps, June 14 to July 18.

    Campers must be at least 4 years old to take part.

    For more information, call Frick Environmental Center at (412) 422-6538.