Mary bought a dress in a women's clothing store.She felt very happy about buying the dress until she got home. Then she remembered she had left her purse at the store.It was the third time that month that Mary had forgotten something important.Mary was angry with herself.She said,“Am I losing it?”

    Emma was teaching a class in mathematics at a college.She began to explain to the students how to solve a very difficult problem.She understood it very well.But somehow,at that moment,she could not explain it.Emma said,“I must be losing it.”

    Americans seem to have a lot of concern about losing it.At least that is what you would think from hearing them talk.They use the expression when they feel they are losing control.It can mean losing emotional control.Or losing the ability to do something.Or losing intelligence.

    Word experts differ about how the expression started.Some believe it came from television programs popular in the 1980s.Others believe it began with psychologists,who deal with how people think,feel and act.

    “We Americans have many concerns about controlling our lives.Perhaps we worry too much,”one psychologist said.“In many situations to say you are losing it eases the tension（不安）.”

    It's healthy.And most people who say they are having a problem are not losing it.

    People may feel more like they are losing it when they are “down in the dumps”.Word expert Charles Funk says people have been feeling down in the dumps for more than 400 years.The word dumps probably comes from Northern European countries.The languages of Denmark and Norway both have similar words.The words mean to fall suddenly.Americans borrowed this saying.And,over the years,it has become a popular way of expressing sadness.

    Navarathri, which is celebrated throughout India, falls in September or October. On the first three days, people pray (祈祷) to the goddess Durga, the protector who destroys all evil. The next three days they pray to Lakshmi, the goddess of wealth. Then, also for three days, they look to Saraswathi, the goddess of wisdom and knowledge. The tenth and final day of the festival is for the goddess Durga. On this day many years ago, Durga killed the evil buffalo-headed monster, Mahishasura.

    My daughter and I took out the models of the gods and goddesses that we had stored away last year. Soon the room was littered with all kinds of dolls. We usually buy at least one new doll every year. On the tenth day, the dolls are carefully put away. If a doll is too damaged to be shown, it is never thrown away. Instead, it is put deep into the seas.

    In our hallway six long wooden steps are set up. First, we spread a thick white cloth over the steps. Now it's time to put the dolls on the steps carefully. Every year, the gollu is different. Sometimes — as the collection grows — there is no space to fit all of the dolls on the steps. Smaller dolls can also be placed on the floor.

    Every night there are prayers, music, dancing, and a large meal for many people. In northern India, the children sing songs while doing the dandiya raas, a traditional dance. Every dancer also has two wooden sticks — called dandiya — that he or she uses to make a sound in time to the lovely music. Dancing the dandiya raas helps people think of the true meaning of Navarathri — togetherness, laughter, and fun!

    Since the first Earth Day in 1970, Americans have gotten a lot “greener” toward the environment. “We didn't know at that time there even was an environment, let alone that there was a problem with it,” says Bruce Anderson, president of Earth Day USA.

    But what began as nothing important in public affairs has grown into a social movement .Business people, political leaders, university professors, and especially millions of grass-roots Americans are taking part in the movement. “The understanding has increased many, many times,” says Gaylord Nelson, the former governor from Wisconsin, who thought up the first. According to US government reports, emissions (排放)from cars and trucks have dropped from 10.3 million tons a year to 5.5 tons .The number of cities producing CO beyond the standard has been reduced from 40 to 9. Although serious problems still remain and need to be dealt with, the world is a safer and healthier place. A kind of “Green thinking” has become part of practices.

    Great improvement has been achieved. In 1988 there were only 600 recycling programs; today in 1995 there are about 6,600. Advanced lights, motors, and building designs have helped save a lot of energy and therefore prevented pollution.

    Twenty –five years ago, there were hardly any education programs for environment. Today, it's hard to find a public school, university, or law school that does not have such a kind of program. “Until we do that, nothing else will change!” say Bruce Anderson.

    When traveling in England, here are some things to keep in mind.

    When taking the underground in England, once on the underground train, stand clear of the closing doors. They can give you a pretty hurtful knock if they hit you. When getting on or off the tube train, make sure you mind the gap(缝隙)! This varies from a few inches to a foot at some of the stations.

    The saying that English food is boring and tasteless isn't true, at least not anymore. You'll find a huge variety of international restaurants, especially in London. Make sure you eat some of the old-fashioned traditional foods in pubs, and wash it down with some local beer!

    Come prepared for any sort of weather ——even if the day starts off well, it's likely that the temperature will change. The best thing to do is layer(分层穿套) your clothes so that you can add or reduce as necessary.

    The British are in general very polite people and will expect at least basic politeness from travelers. Pleases and thanks go a long way! At the same time  they like playing jokes on others. Don't be surprised or offended if you're called darling, dear, dearie, flower, love, chick, chuck, me duck, son, ma'am or any other similar pet name by someone you don't know. It's quite normal.

    England is generally quite safe, but you'll need to be more careful in London and the other large cities, especially at night. Choose an underground train that has plenty of people in it and avoid suburban underground stations at night. There are many night buses you can catch, but try not to do this alone. A licensed cab is often the best choice. Try and leave valuable things in your hotel room, as pickpockets(扒手) do operate in some areas. Be careful of bags especially when in some busy areas.

The theatre in Shakespeare's time was much different than it is today. Authors wrote plays for the masses, especially those who couldn't read or write.

The theatre changed a lot during Shakespeare's lifetime. The authorities didn't like it and didn't allow acting in the city itself: They thought it had a bad influence on people and kept them from going to church. Queen Elizabeth, on the other hand, loved acting and helped the theatre become popular.

The theatre in Shakespeare's time was full of life. People did not sit all the time and it was not quiet during the performance. The audience could walk around, eat and drink during the play.

Theaters were open arenas or playhouses that had room for up to three thousand people. There was almost no scenery because the dialogue was the most important part of the play. Colourful and well­designed costumes were very important and told the people about the status of a character. Women never performed in plays, 80 young boys played female characters. The performances took place in the afternoon because it was too dark at night.

There was no stage crew as there is today. Actors had do everything themselves—from making costumes to setting the stage. Plays were organized by acting companies. They performed about 6 different plays each week because they needed money to survive. They had almost no time to rehearse (排练).

The companies in Shakespeare's time had a rank system. The company belonged to shareholders and managers. They were responsible for everything and got most of the money when the company was successful. Sometimes they even owned their own buildings. Actors worked for the managers arid after some time became a permanent member of the company. Apprentices (学徒) were young boys and were allowed to act in unimportant role. They also played females characters in play.

Biologists from the John Innes Centre in England discovered that plants have a biological process which divides their amount of stored energy by the length of the night. This solves the problem of how to portion out (分配) energy reserves during the night so that the plant can keep growing, yet not risk burning off all its stored energy.

While the sun shines, plants perform photosynthesis (光合作用). In this process, the plants change sunlight, water and carbon dioxide into stored energy in the form of long chains of sugar, called starch (淀粉). At night, the plants burn this stored starch to fuel continued growth.

"The calculations are precise so that plants prevent starvation but also make the most efficient use of their food," said study co-author Alison Smith. "If the starch store is used too fast, plants will starve and stop growing during the night. If the store is used too slowly, some of it will be wasted. "

The scientists studied the plant Arabidopsis, which is regarded as a model plant for experiments. To give the plants some math tests, the biologists let night arrive unexpectedly early or late for them.

During one of the exams, they shut off the lights early on them that had been grown with twelve-hour days and nights. Putting them into darkness after only an eight-hour day means they didn't have time to store as much starch as usual. And this forced the plants to adjust their normal nightly rhythm.

Amazingly, even after this day length trick, the plants did very well in their exams and ended up with just five percent of starch left over at the end of the night. They had neither starved, nor stored starch that could have been used to fuel more growth.

The authors suggested that similar biological calculators may explain how a migratory bird, the little stint, can make a five-thousand-kilometer journey to their summer habitat in the Arctic and arrive with enough fat reserves to survive only approximately half a day more, on average.

The results of the study were published in e Life.