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."

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.

Warren came from America. He was a reporter from a school newspaper. He and other reporters went to NASA and {#blank#}1{#/blank#}(采访)Scott Kelly. Kelly was a famous astronaut and once lived on the {#blank#}2{#/blank#}(国际的) Space Station for almost a year.

When Warren and other reporters arrived there, a {#blank#}3{#/blank#}(主管) of NASA gave them a warm welcome. He first showed them {#blank#}4{#/blank#}(到处), and then took them to an office to meet Scott Kelly. Everyone had a {#blank#}5{#/blank#}(机会) to ask Kelly one question."What does the earth look like in space?" one asked. "From a black {#blank#}6{#/blank#}(背景), I saw a blue planet in space. It's so beautiful!"answered Kelly. "Did you {#blank#}7{#/blank#}(想 念 ) your family and friends?" another asked. "Yes, sometimes,"said Kelly with a {#blank#}8{#/blank#}(微笑). "Why do we explore (探索) space?" asked Warren,"Exploring space can help us {#blank#}9{#/blank#}(解决问题) many problems in our lives," Kelly said.

Warren wrote down the answer in his report. He thought this answer would {#blank#}10{#/blank#}(使满意) readers.

It was a warm spring day in 2021. Chen Beier, a reporter from Hong Kong, was on her way to a small village called Atule'er. The small village sits at the top of a high cliff (悬崖). People can only get up to it by climbing a 2, 556-step steel ladder*. It is very dangerous. 

So, was Chen looking for adventure (冒险) there? The answer is no. The reporter was trying to show people something. 

In February 2021, China got rid of poverty (摆脱贫困). Many people couldn't believe this, because China has a large number of poor villages. To show the truth to people, Chen went to make No Poverty Land. 

The trip was so hard. When she was halfway up the ladder to Atul'er, for example, Chen felt so tired that she could hardly go any further. She was also afraid of heights. The villagers advised her to stop the climb, but the woman didn't stop. 

This steel ladder, in fact, is only six years old. Before it was built, the villagers had to face even bigger danger and use a rattan (藤条制成的) ladder. The government also built houses for the villagers at the foot of the mountain. Through No Poverty Land, people can easily see how life in poor places of China has been improved. 

China has changed a lot, but some people just find it hard to believe. Now, Chen has shown us what we can do about that: Don't just tell people about the great changes, show them when you can.