When people think of tigers, words like" strong" and " dangerous" come into their mind. But now, the big animal is calling for our help. There were once eight kinds of tigers in the world, but three died out during last century. In the past 70 years, the number of Siberian tigers has gone from as many as 300 to somewhere between 18 and 22.

   World Wildlife Fund started a programme. It is about to put an end to tiger poaching(非法狩猎) and save wild tigers. China, together with 12 other countries, has joined in. The aim is to double the number of wild tigers in the next ten years.

According to the research by Chinese officers and WWF, the Siberian tiger is already one of the planet's most endangered animals. "If the government doesn't do anything, it's quite possible that there will be no more Siberian tigers in China in 10 to 20 years." said Zhu Chunquan, director at WWF Beijing office.

    Wild animals such as deer and wild bears are tigers' main food. The poaching of these animals is the greatest danger to tigers. Another one is the trap(陷阱). "Volunteers from WWF remove traps every year, but we cannot clear all the traps ourselves," Zhu said. The most important thing people can do is to save the animals tigers eat." To protect the tigers, we need to call on more people to stop hunting wild animals."

Here is a part from Maria's diaries(日记) about her vacation.

The 3^rd Day: Yesterday we arrived in London in the rain. We went to some big shops.

The 4^th Day: We came to Paris. The day was cloudy and the food wasn't good. We liked the shops here, but the things were dear.

The 5^th Day: We arrived in Rome in the hot weather. We had lunch in a small restaurant, and the food was delicious. We visited some shops. They were all wonderful.

The 6^th Day: We went to New York and the things in the shops were all dear. But we liked the warm weather there.

The 7^th Day: Today we visited New York City. The weather was fine. We'll go back home tomorrow after a week's vacation.

A: Mr. Liu, can I ask you some questions about Mars?

B: Sure, go ahead.

A: Is Mars hot?

B: Mars might look red-hot. But don't let its color fool you. Mars is much farther away from the sun than Earth. So it gets less light and heat.

A: Why "Mars"?

B: Mars takes its name from the Roman god of war (罗马战神). In China, the red color makes people think of fire. So they call the planet "fire star".

A: Are there Martians on Mars?

B: Unluckily, we haven't found any "people" on Mars yet. They are kind of like Santa Clause. Nobody can see them, but many people believe they are real.

A: Will we lose weight on Mars?

B: Living on Mars could be good in many ways. For example, you might not need to go on a diet to lose weight. If you weigh 50kg on Earth, you will only weigh 19kg on Mars. This is because the surface gravity (表面重力) on Mars is only about 38 percent of that on Earth. Do you want to know your weight on Mars? Just multiply your weight by 0.38. That's it.

A: Thank you. We know a lot about Mars now.

B: You're welcome.

Mother's Day first began in America. A mother was very kind. After she died, her daughter wanted to remember her so she wanted to make a day for all the mothers. In 1913, America decided to make the second Sunday of May to be Mother's Day and every family had to put up a national flag to show their love to mothers. Later, it became an important festival to remember and praise(赞扬) all the mothers in the world.

In China, some people want to make our own Mother's Day. There is a famous story about Mother Meng. She loved her son very much and did a lot for her son. Chinese people think she was a great mother, so people want to make lunar(阴历的) April 2nd to be the day. Because Mother Meng's son——Mengzi was born on that day.

On Mother's Day, children often help their mothers do some cleaning and they also buy gifts for their mothers. Some mothers even go for a trip and have some other activities to celebrate this day.

Mother's Day

What do you often do to celebrate(庆祝) Mother's Day? (No more than 15 words) {#blank#}5{#/blank#}