In the mid­1950s，I was a somewhat bored early­ado lescent male student who believed that doing_any_more_than_necessary_was_wasted_effort.One day，this approach threw me into embarrassment.

    In Mrs.Totten's eighth­grade math class at Central Avenue School in Anderson，Indiana，we were learning to add and subtract decimals (小数)．

    Our teacher typically assigned daily homework，which would be recited in class the following day.On most days，our grades were based on our oral answers to homework questions.

    Mrs.Totten usually walked up and down the rows of desks requesting answers from student after student in the order the questions had appeared on our homework sheets.She would start either at the front or the back of the classroom and work toward the other end.

    Since I was seated near the middle of about 35 students，it was easy to figure out which questions I might have to answer.This particular time，I had completed my usual two or three problems according to my calculations.

What I failed to expect was that several students were absent，which threw off my estimate.As Mrs.Totten made her way from the beginning of the class，I desperately tried to determine which math problem I would get.I tried to work it out before she got to me，but I had brain freeze and couldn't function.

    When Mrs.Totten reached my desk，she asked what answer I'd got for problem No.14.“I...I didn't get anything，”I answered，and my face felt warm.

     “Correct，”she said.

    It turned out that the correct answer was zero.

    What did I learn that day？First，always do all your homework.Second，in real life it isn't always what you say but how you say it that matters.Third，I would never make it as a mathematician.

    If I could choose one school day that taught me the most，it would be that one.

    Nothing could stop Dad. After he was put on disability for a bad back, he bought a small farm in the country, just enough to grow food for the family. He planted vegetables, fruit trees and even kept bees for honey.

    And every week he cleaned Old Man McColgin's chicken house in exchange for manure(肥料). The smell really burned the inside of your nose. When we complained about the terrible smell, Dad said the stronger the manure, the healthier the crops, and he was right. For example, just one of his cantaloupes filled the entire house with its sweet smell, and the taste was even sweeter.

    As the vegetables started coming in, Dad threw himself into cooking. One day, armed with a basket of vegetables, he announced he was going to make stew(炖菜).Dad pulled out a pressure cooker and filled it up with cabbages, eggplants, potatoes, corns, onions and carrots. For about half an hour, the pressure built and the vegetables cooked. Finally, Dad turned off the stove, the pot began to cool and the pressure relief valve sprayed out a cloud of steam. If we thought Dad's pile of chicken manure was bad, this was 10 times worse. When Dad took off the lid, the smell nearly knocked us out.

    Dad carried the pot out and we opened doors and windows to air out the house. Just how bad was it? The neighbors came out of their houses to see if we had a gas leak!

    Determined, Dad filled our plates with steaming stew and passed them around. It didn't look that bad, and after the first wave had shut down my ability to smell, it didn't offend the nose so much, either. I took a taste. It would never win a prize in a cooking competition, but it was surprisingly edible, and we drank up every last drop of soup!

    Spring is just around the corner and it's a time to get outside and enjoy the great outdoors. Here is a selection of festivals around the country that are a great excuse to get back in the spring sunshine.

Dana Point Festival of the Whales

Dana Point, California

March 7 to 8 and 14 to 15, 2010

    Each year, over two sunny weekends in March the town of Dana Point, California celebrates the return of migratory California Gray whales to this part of the Pacific Ocean. Festivities include whale-watching, an arts festival and educational hands-on activities for the entire family. Prices start at $ 29 per adult and $ 19 for children. For more information, visit www.dpfestivalofwhales. com

Chandler Ostrich Festival

Chandler, Arizona

March 13 to 15, 2010

    Chandler is the center of Ostrich(鸵鸟) ranching in the U.S. You can see jockeys ride these feathered beasts around the ostrich track at Tubleweed Park. General admission is $ 9 for adults, $ 8 for seniors, $ 7 for children aged five to 12 and kids four and under are free. For more information visit www.ostrich festival.com

Festival of Houses and Gardens

Charlestib, South Carolina

March 19 to April 18, 2010

    The Historic Charleston Foundation gives curious travelers the opportunity to explore gardens of some of the finest private residences in America. Each three-hour tour(afternoons from 2 to 5 p.m. and evenings from 6 to 9 p.m.)lets you to visit eight to ten properties dating from the American colonial period. Prices range from $25 to $45. For more information, visit www.historic-charleston.org.

Tulip Time Festival

Holland, Michigan

May 1 to 9, 2010

    You don't need to travel to the Netherlands this spring to see and smell some of the world's finest tulips (郁金香). The town of Holland is home to millions of colorful bulbs. The 81^st annual Tulip Time Festival, one of the largest flower festivals in the country will begin with fireworks on May 1. Admission fee ranges from $ 6 for the children's area to $ 38 for theatre tickets. Tickets and more information are available at www.tuliptime.com.

    The printing press has a long history. It was invented in Germany by Joannes Gutenberg around 1440, and brought to England by William Caxton in the 1470s.Yet the basic technology of printing remained the same up to the end of the 18th century, requiring two men to operate a wooden screw press by hand, producing about 200 impressions an hour. The 19th century was the period in which this process was mechanised, automated, and made many times faster.

    A key moment in the development of mass newspapers was the development of the steam-powered printing press, adopted by the times in 1814. The new presses were able to print per hour around five times the number produced by the machines. The editor, John Walter, had the machines fixed secretly at night, so that when his printers reported for duty the next morning the majority of them found that they were out of work. The Times went from a circulation of 5,000 a day in 1815 to around 50,000 in the middle of the century. This was not caused by the steam press, but neither could it have happened without it.

    Later developments improved this effect: the Applegath machine achieved 5,000 impressions per hour, and the Hoe press, an import from the United States, reached to 20,000 impressions per hour. Increase in the speed of papermaking in this period brought down the cost of printed materials both for the producer and the customer. In 1896, the Daily Mail was sold at the cost of only half a penny, and by 1900 it was selling nearly 1,000,000 copies a day.

    If print production was completely changed in those years, then so was its distribution. The appearance of the steam railway meant that for the first time newspapers could be distributed across the country on a daily basis.

    Have you ever spent an afternoon in the backyard, maybe grilling or enjoying a basketball game, when suddenly you notice that everything goes quiet? There is an old phrase "calm before the storm", often used in a situation—a quiet period just before a great activity or excitement. According to our own experience, we know there is actually calm before the storm. But what causes this calm? And is it always calm before the storm? Let's hear what scientists have to say.

    A period of calm happens in a particular kind of storm, the simplest kind of storm—a single-cell thunderstorm. In this type of thunderstorm, there is usually only one main updraft, which is warm, damp air and drawn from places near the ground. Storms need warm and damp air as fuel, so they typically draw that air in from surrounding environment. Storms can draw in the air that fit their need from all directions—even from the direction in which the storm is traveling.

    As the warm, damp air is pulled into a storm system, it leaves a low-pressure vacuum (真空) coming after. The rising air meets the cold dry air that has already existed in the storm clouds, thus the temperature of the warm, damp air drops, and the water vapour (水蒸汽) in it changes into tiny drops that are a precondition of rain. These drops accumulate and build on larger particles like dust, until they grow large enough to form raindrops.

    This warm, damp air keeps moving upwards, but it becomes cooler and drier during its trip through cloud. When it reaches the top of the cloud, the air gets spit out (被挤出) at the top. This air is sent rolling out over the big thunderclouds. From there, the air goes down. Warm and dry air is relatively stable, and once it covers a region, that air, in turn, causes the calm before a storm.

    Most thunderstorms, though, don't start with calm. That's because most are actually groups of storms with complex wind patterns. There's so much air moving up and down storm groups that the calm before the storm never happens. Instead, before the storm,让 might be really windy!

New movies set holiday eve record

    Chinese moviegoers set a box office (票房) record for the eve of the week—long National Day holiday. By 9:30 p.m. September 30, new movies had brought in 630 million yuan.

    The major movies contributing to the box office record were My People, My Country, The Captain and The Climbers.

    My People, My Country ranked first by bringing in around 270 million yuan. It was made up of seven short stories which were set in historic moments to look back at New China's 70 years of existence. The movie was co-directed by Chen Kaige, Zhang Yibai, Guan Hu, Xue Xiaolu, Xu Zheng, Ning Hao and Wen Muye.

    Another well-received film, The Captain, earned 194 million yuan to occupy second place. Starring actor Zhang Hanyu, the film is based on heroic Sichuan Airlines pilot Liu Chuanjian, who completed one of the most miraculous (奇迹的) emergency landings in China's civil aviation (民航) history.

    Also adapted from real events, The Climbers earned 157 million yuan. With an excellent cast including Zhang Ziyi and Wu Jing, the film is about Chinese mountaineers' climbing to the top of Mount Qomolangma.

    Wu Jing said the film filled a gap in the market, with sports-themed titles quite rare in the world's second-largest movie market.

    Besides the three movies, eight other films will be on during the holiday ending on Oct 7.