There are many brave and talented people who work in different branches (分科;分支) of science. Extreme (另类的) scientists are people who work in very difficult and dangerous places. They don't work in a1all the time like other scientists do. Instead, they search2information that can only be gathered through firsthand experiences. These scientists have to explore deep, dark caves, swim with sharks or act as swan mothers. The number of great white sharks in the world3smaller now. They are one of4animals on Earth.

    Scientists need to find out how many sharks5now. Sometimes scientists have to get very close to a shark. The easiest and6way to do this is from inside a shark cage.7, sometimes sharks attack the cage. They shake it, and bend the bars with their sharp8. The trumpeter swan is the largest swan in the world, but it9until it nearly became endangered birds. Because of this, parents swans10younger swans to migrate before.

    Scientists have to teach the younger swans how to do it. They teach the swans to follow a plane which looks like a lead swan. Extreme scientists are always trying to discover something new.

    I remember my first day to go to a new school. My dad and I went to the bus stop together. As we 1 the school bus, he took me by his hand. But I still felt worried and 2. I had to go into a new environment. There I had no fiends and no familiar(熟悉的) teachers or classmates.

    The yellow school bus arrived soon. As I got on the bus, I felt 60 eyes looking at me. I felt 3 and sad. I turned around and looked at my dad. When the 4 went away, I couldn't stop crying.

    I walked into my 5 and sat quietly. I looked out of the window and really 6 to see my father's kind figure (身影). It seemed my heart was still with my father. 7, he was there! He stood there, made the shape of a heart and said, "Everything will be okay."

    My father saw me 8 through the window of the bus so he followed the school bus. He wanted to make sure that I wouldn't be too 9 on my first day there.

    With his 10, I'm now studying in a university. Today is Father's Day, and I want all of you to thank your parents for their love. Love is not about changing but about helping each other.

    When we talk 1 teenagers who are getting 2 now, most young people don't agree. Teenagers say they are growing up. They can have part-time jobs. They can drive cars. And they can even get 3 when they are a little bit older.

    Their parents say, "Our children are very good. They like pop music but they play it in their own rooms. They often help in the house. You know, they feel 4 sometimes because there is nothing interesting in the neighborhood. No clubs, and no sports. They have 5 to do."

    A teacher says that he believes most young people are very kind. He thinks that it's not bad for young people 6 loud music because it can give them lots of energy and make them 7 . Also, a lot of young people 8 very hard at school. And they can get good jobs later.

    Jerry, a 9 boy, said, "I have passed all my examinations but I can't get a part-time job 10 the elder people always think I'm lazy."

In my opinion, a lot of teenagers are very nice. They belong to community work groups.

    They help old people, and volunteer to help in local hospital or primary schools.

    More than 450 Chinese people want to live on Mars. They bought one-way tickets to 1 Mars. A club in Netherlands planned to build a city there in 2023. Many people want to inn the2 450 of them are Chinese.

    The club is planning a TV show. 3 can watch how the astronauts(宇航员) live and what they do to get ready for the 4trip.

    "If they get to Mars, they can't come back to Earth. Mars is 5,"its website says. "We should help each astronaut keep 6 and teach them to live and work together to enjoy a 7 future."

    Before leaving Earth, astronauts should practise living and 8 on Mars for eight years. Ma Qiang, a 39-year-old man from Sichuan, China, 9the reporter he hoped to live a new life on Mars. Ma said he survived the 2008 earthquake. He wanted to do10 to make his life different, he told the reporter a trip to Mars could be the answer.

    I designed(设计) some of my own Smile cards personally. One of them is for "hiding" 1 in unexpected places. I hoped that this would be found by someone who really 2 it.

    So, I went to a local supermarket near here and placed a $20 bill with the 3 behind a product(产品). I then went to another side to see who would find it. I wanted to see 4he or she would react(反应) !

    After a while a lady5 the money with the card. Then she looked around to see if she could know who left it. I was 6to find she put it back! I guessed she really didn't need it.

    After about another seven 7a lady with a young boy found the money. They started looking around the 8! I guessed they were looking for hidden 9! Again the money was put back.

    I never saw who finally needed the money 10 I did get to see just how amazing some people were! Also, I'm glad that those who didn't think they needed the money left it for someone who did! Very warm!

    One day, while Mark was walking in Central Park, he saw a UFO. He became afraid of it, and ran to the back of a big tree. The UFO landed in Central Park with a loud noise and bright lights around it. A(n) 1 walked out of the UFO. Mark looked out from behind the tree. Just then, the alien saw him too. They 2 looking at each other. Mark was nervous enough to ask, "Where do you come from?"

    "I'm from another 3 I'm Mel," said the alien. "Let's be friends."

    Mark thought he should make the alien know humans 4and learn how to communicate with humans. So he said, "Follow me."

    Mark began to hang out around with the alien. He 5 that humans had changed Nature to make life easier on Planet Earth. He also said to the alien, "6 gives us more free time to do what we want." Finally, he invited the alien to visit the 7 where he worked. They had a great day.

    As the alien got ready to leave; Mark decided to remember their 8 on Planet Earth on computer in his library. And the alien told Mark, "I'll also 9 the day. When I get back to my planet, I will tell our people 10 humans are very friendly. I believe we will communicate more and get on better with each other in the future."

    A man died and was on his way to another world, either the Heaven (天堂) or the Heli (地狱). He saw a very beautiful palace halfway and the owner of the palace invited him to stay.

    The man said, "I have been working hard during my life and now I just want to eat and sleep without any 1 " The owner of the palace said, "If so, there is nowhere else 2 than here for you. There is enough delicious food in my palace and you can eat whatever you want. No one will 3 you. You don't need to do anything. "

    4, the man stayed in the palace. In the5, the man felt very happy, eating and sleeping without thinking about other things. But soon he felt a bit lonely and 6. So he went to the owner and said, "It is very boring to live 7 just eating and sleeping every day. Now I have no8 in this kind of life. Could you help me find a job?"

    The owner 9 , "Sorry, there is no job here at all."

    After another several months, the man could not stand(忍受) this kind of life and went to the owner again, "I really could not stand this kind of life any more. If you do not offer me a job, I would like to go to the Hell instead of 10 here. "

    The owner of the palace laughed loudly, "Do you think it is the Heaven here? It is actually the Hell!"

    Dogs have feelings just like you and me. They cry when they're 1 , and they smile when they're happy. It's true! Dogs have lots of 2 of telling their feelings without using words. You just need to 3 their body language. For example, what does it 4when your dog wags his tail? He's telling you that he's happy, or that he is 5 . something and he wants it. Sometimes you may see your dog tuck (将……缩拢并塞进…..)his tail between his 6 It means that he's probably afraid, or not feeling 7. Also, it isn't hot outside, but does your dog look like he's panting(喘气)? Don't worry—he's fine! It may be

8 , but that's how dogs smile when they relax. Here is a(n) 9 You can try it at home. Ask your 10 , "Do you want to go for a walk?" Watch his body language closely, and you'll probably see him answer, "Yes!"

    The lion is one of the most fierce (凶猛的) animals in the world. Lions can be1 in Africa and India. Lions in Africa can live without water for about one month. Lions are also popular animals in the2 . Almost every zoo around the world has a few lions. It is very3 for people to tell male and female lions from each other. You can judge (判断) simply by their appearance. A male lion has mane while female lions do not have. Male lions are 4than female lions. A male lion usually weighs about 200 kilograms which is always heavier than a female lion. Both male and female lions have very 5 teeth. They can break the backs of other animals 6 Lions feed on other animals and one lion usually kills between ten and twenty large animals each year for 7it's unusual for lions to kill people. However, in 1898 two lions 8and ate over one hundred people in Kenya before they were shot by a British man named Patterson. This 9 became the subject(主题) of a 1996 Hollywood movie called The Ghost and the Darkness. Now the Indian lions are endangered. It's really necessary for us to 10 the animals, or we won't see them again. Animals are our friends. It is our obligation to protect them.

    Tom, eleven years old, was in bed in hospital. Several days ago, while he was playing baseball, he 1 and his head hit the ground. The doctors believed that he might never get well.

    "He seems to have given up 2. So medicine won't work. Perhaps he needs something else," said one of the doctors. "When I visit Tom, all he 3 says is that he would like to meet Babe Ruth." To meet Babe Ruth, of course, was almost 4 Babe Ruth was the most famous baseball player in the United States and he was very busy.

    The next day Tom's father managed to tell Babe Ruth about the 5 of Tom on the phone. Twenty-four hours later, as Tom was lying in his hospital room, Babe Ruth walked in. Young Tom couldn't 6 it really was Babe.

    Babe Ruth sat down at Tom's bed and said, "Now listen, kid, you've got to get 7 I've brought you a new American League baseball. You must start throwing it."

    Tom's father just stayed there, saying nothing. His eyes were full of 8the great man.

    For Tom, this was the 9 of a new life. Once he thought he would never be saved. To the surprise of his doctors, young Tom walked out of the hospital on his own feet a few weeks later. He was able to live a healthy life all 10 the help of Babe Ruth.