Farley worked for the Canadian government. One day. he was 1 to learn more about wolves(狼). Do wolves kill lots of caribou(北美驯鹿)? Do they kill people?

    They gave him lots of food and clothes and guns. Then they put him on a plane and took him to 2. The plane put him down and went away. There were no houses or people in this place, but there were lots of animals and lots of wolves.

    People tell terrible stories about wolves. They say wolves like to kill and eat people. Farley remembered these stories，and he was 3. He had his gun with him 4.

    Then one day, he saw a group of wolves. There was a mother wolf with four baby wolves. A father wolf and another young wolf lived with them.

    Farley watched these wolves every day. The mother was a very 5 mother. She gave milk to her babies. She gave them lessons about life. They learned how to 6 food. The father wolf got food for the mother. The young wolf 7 the children. They were a nice, happy family-a wolf family. Farley did not need his 8 anymore. In a short time, he got on well with the wolf family. Farley watched them for five months. He learned many new things about wolves. He learned that many stories about wolves were 9. Wolves do not eat people, and they do not eat many large animals. And he also learned bad things about men. It was men who killed many caribou and wolves.

    Later, Farley wrote a book about wolves. He wanted people to 10 them and not to kill them.

    When US student Olivia Priedeman, 17, woke up one morning, she thought she had had a dream about making plans with a friend.

    But it wasn't a dream. Her phone showed that during the night, Priedeman had read a text message from her friend. She did it while she was fast asleep.

    Reading and sending text messages while asleep called─ "sleep texting"─ is an unusual sleep behaviour, similar to sleep walking. It's also a growing problem among doctors: young people can't live without their cell phones.

    One in three teenagers sends more than 100 text messages a day, according to the Pew Internet & American Life Project. And at least four out of five teenagers said they sleep with their phone on or near their bed.

    Elizabeth Dowdell, a professor at Villanova University in Pennsylvania, has studied sleep texting. She said that having a phone nearby all night is a big part of the problem.

    Andrew Stiehm, a sleep medicine researcher with Allina Health in Minnesota, agrees. It's possible for the part of the brain that controls skills to wake up, while the part of the brain that controls memory and judgment(判断) may be still asleep. That's why some people can perform basic movements-such as walking, talking, texting or even driving while they're sleeping. Some of Dowdell's students said that they're disturbed by their nighttime texting behaviour. But because sleep texting is unconscious, it's a difficult habit to break. Dowdell said she knows of some students who wear socks on their hands to keep themselves from texting.

    Marjorie Hogan, a doctor at Hennepin County Medical Centre in Minneapolis, Minnesota, suggests keeping all electronic products outside the bedroom.

    Have you heard of STEM education? STEM 1 Science, Technology, Engineering and Mathematics. It means students can learn these 2subjects in one class. And they work on many projects to practice 3 they learn STEM education is very 4 in the US.

    Now more than 600 5 middle schools bring in STEM education, according to the paper, en. Beijing, Yuying School is one of them.

    The school 6 the course in May. It invited college teachers to teach more than 80 students programming, robotics and other interdisciplinary(跨学科}的) knowledge.

    The teaching style is quite 7, Once teachers finish teaching basie knowledge, studentes will practice it 8. For example, after learning about electrie circuits(电路),students are required to design one that could control three lights 9.They have many projects to improve their hands-on 10 as well. Once, they had a "smart home" model design project. All the students competed to design a 11 model and make it "smart" .Liu Tianyou, 12, with 12 teammates, used computer programs and sensors to finish it. "If you open the door of the house, the lights will 13 automatically, "he said. Their work won the third prize.

    The class, develops students' creativity as well. 14 Learning mechanies and programming in the class, Zhao Hngyi, 14, made a Lego robot himself in eight 15.From assembling(组装)to testing he finished it on his own. The robot can catch things and walk on certain tracks under orders. " It's cool to make my idea come to life," he said.

    At the beginning of this century, medical scientists made a interesting discovery(发现). We are bulk not just of flesh (肉)and blood but also of time. They were1to show that we all have a body clock inside us, which controls the2and fall of our body energies. It can 3us different from one day to the next.

    The idea of a body clock should not be too4because the lives of most living things are controlled by the 24-hour-night-and-day cycle. We feel 5 and fall asleep at night and become 6 and energetic during the day. Most people will have a bad feeling 24-hour cycle is 7. For example, people who are not used to working at night can find that luck  (缺少)of sleep causes them to 8 badly at work.

    Besides (除了) the daily cycle of sleeping and waking, we 9 have other cycle which lasts longer than one day. Most of us would 10 that we feel good on some days and not so good on others. Sometimes our ideas seem to be so active, and at other times they are not.