Sweaty palms shaking hands and a racing heart! This is what many students experience when they take a big test. When anxiety(焦虑)kicks in students can completely lose concentration, leading to poor scores. But is there any solution to such stress?

The key to reducing test anxiety is writing. According to a recent report in the journal Science taking a few minutes before an exam to write about all those fears could help students perform better.

The study was conducted by Professor Sian L. Beilock from the University of Chicago and his graduate student Gcrardo Ramirez.

First the researchers asked 20 college students to take a maths test to get a base-lined score. Next they told the students that they could get a monetary award if they got a good score and that they were being videotaped.

Before beginning the main test the researchers asked one group of students to spend 10 minutes writing down their anxieties about the test while the other group sat quietly. Both groups then took the same exam.

The researchers found that students who sat quietly did 12% worse than they had on the pre-test and the ones who wrote about their anxieties improved their scores by 5%.

Writing enables students to feel refreshed when facing challenging questions on the examination. However experts also warn that such a change will not cause students to become any smarter. It can only make them become more relaxed and focused.

Our world is getting smaller and smaller. We can fly around the world in less than 50 hours. The newest plane can fly at 600 miles an hour. You can have breakfast in Tokyo and supper in Paris.

But hundreds of years ago, it took people a long time to go around the world. Magellan’s (麦哲伦) men were the first to make that trip. They went by ship and it took them more than two years. On September 20th, 1510, he left Spain (西班牙) with five ships and 240 men. He was killed in the Philippines (菲律宾). More than two years later, on December 21st, 1512, only one of the five ships with just 31 men returned to Spain. Magellan’s trip taught us that the world was round and that people could go around the world.

What's the time, Mom? "Then your mother has a look at the clock and tells you, "It's seven o'clock. it's time to get up." We know the time by watches and clocks.

Switzerland can give the best of them in the world, So we call it "Watch Kingdom". Now people in the country have a new type of clock-air clock.

You needn't wind up（上弦) or put a battery(电池) in this kind of clock. It can keep on going for 600 years. The clock is in a transparent(透明的) plastic film. The film expands(膨胀)or contracts（收缩) according to the temperatures: The clock goes on and on by itself. What a wonderful idea it is!

The clock is very popular with so many people who like to live a simple life. Now, the Swiss government takes the clock as a national gift to guests from other countries.