Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren’t very smooth rub together to make heat energy. The faster you rub two things together, the more friction ( and heat) you can make. Let’s discover friction!
WHAT YOU’LL NEED
·Soap ·Water·Your hands!
WHAT TO DO
Make sure your hands are dirty.
Rub your hands together until you feel the heat of your hands.
Now, use soap and water to get your hands very slippery(滑的).
Try to make friction happen while your hands are slippery.
Please write down what has happened.
LET’S TALK!
Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won’t make very much friction and your hands won’t get so hot.
DID YOU KNOW?
Friction happens when you stop your fast running bike.
Ancient people made fire by rubbing two pieces of wood together. Friction happened though they didn’t know it.
____?___
Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires(轮胎) of the car before and after a short drive to see how much warmer they get from friction. This text is most probably________________________.
| A．a science report | B．a car advertisement |
| C．a rubbing introduction | D．a chemistry programme |
What does the word “friction” in this text mean in Chinese?
| A．摩擦 | B．冷却 | C．膨胀 | D．震动 |
___________ is not an example of friction.
| A．Bike riding | B．Car driving | C．Hands rubbing | D．Friction discovering |
What’s the last column(栏目)?
| A．THINK IT OVER! | B．WHAT HAPPENED? |
| C．EVERYDAY ACTION: | D．WORK WITH PARENTS |
阅读理解 阅读下面的短文，然后根据短文内容，在每小题所给的四个选项中选出最佳选项，并在答题卡上将该项涂黑。（本大题共13小题，每小题2分，共26分）
A
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Harry Potter and the Deathly Hallows By J. K. Rowling Paperback， 784 pages. Publisher (出版商): Arthur a Levine Date：07/07/2009 Reading level: Age: 9—12 Price: $16.69 |
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Deceptively Delicious By Jessica Seinfeld Hardcover， 204 pages. Publisher: Collins Date：09/01/2007 Reading Level: Parents Price: $12.83 |
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Rich Dad， Poor Dad By Robert T. Kiyosaki Paperback， 266 pages Publisher: Business Plus Date: 01/01/2010 Reading Level: Age 20-25 Price: $5.59 |
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The Road By Cormac McCarthy Paperback， 304 pages. Publisher: Vintage Books Date: 09/11/2007 Reading Level: Adults Price: $5.50 |
Among the books， there is/are ____ written for adults(成人) .
| A．one | B．two | C．three | D．four |
Who wrote Rich Dad， Poor Dad ?
| A．J.K. Rowling. | B．Jessica Seinfeld. |
| C．Cormac McCarthy. | D．Robert T. Kiyosaki. |
Which of the following books is the latest in print ?
| A．Harry Potter and the Deathly Hallows. |
| B．Deceptively Delicious. |
| C．Rich Dad ， Poor Dad. |
| D．The Road . |
Here are some simple steps on how to sleep well, from your bed to your diet, our aim is to help you sleep better at night.
Step1: Food and drink
Avoid coffee, tea, coca and cola drinks late in the evening as they all have caffeine. They may keep you awake. Don’t eat too much for your dinner, because your body will have to stay awake half the night digesting(消化) your meal, so you won’t feel rested in the morning. Milk, turkey and peanuts all have chemicals that help the brain relax. So have a turkey and peanut butter sandwich is a good choice.
Step2: Another thing that affects your sleep is the position you sleep in. we all have our preferences, but for a perfect night’s sleep you should try to keep your body in a proper position, where both your head and neck are kept straight. All you need is a comfortable bed and some well placed pillows.
Step:3 Your bedroom should be a place for sleeping only. It is not a good idea to use your bed for doing work, making phone calls etc. Help your body recognize that this is a place for rest by throwing away anything work related before you go to bed.Keep your bedroom dark while you are sleeping. As soon as it’s time to wake up , open the curtains or turn a light on. Lights helps your body know it’s time to wake up.
Step4: Have a bedtime routine ( 常规). Having a bath before bed will help your brain relaxed and prepare you for sleep. Reading a book or listening to the same piece of music every night may help too. Write down your worries and possible solutions before you go to bed, then stop thinking about them.
| How to get a good |
|
| Eat and drink properly |
※Avoid coffee, tea, coca and cola drinks late in the evening as they all have caffeine which may keep you ※Don’t eat too much for your dinner because this will |
| Sleep |
※we all have our preferences, but for a perfect night’s sleep you should try to keep your body in a proper position, where both your head and neck are kept straight. ※you |
| Keep your bedroom a place for |
※ |
| Have a bedtime routine ( 常规) |
※Have a bath before ※ Read a book or listen to the same piece of music every night may help as ※ Write down your worries and possible solutions before you go to bed, then stop thinking about them. |
Are you good at eating? Do you want to eat every delicious food in the world? Then do you watch the popular program? “A Bite of China(舌尖上的中国)” is a documentary on Chinese delicious food which has been broadcast by CCTV. Can you find any holiday celebrated without a special festival food? Food is very important in China. Here are several traditional Chinese foods:
Eggs hold a special meaning in many cultures. Chinese believe that eggs mean producing something new. For example, after a baby is born, parents may hold a " feast party," where they pass out eggs to announce the birth. In some areas of China the number of eggs represents the sex of the child, the number(1,3,5…) for a girl, and (2,4,6…) for a boy.
Noodles are a symbol of long life in Chinese culture. They are as much a part of a Chinese birthday celebration as a birthday cake with lit candles in many countries. Since noodles represent long life, it is considered very unlucky to cut them off.
Although westerners sometimes may be very sorry to see fish lying on a plate, in China a whole fish is a symbol of richness. In fact, at a party it is traditional to serve the whole fish last, fish head pointed toward the valued guest. Fish also has a special meaning because the Chinese word for fish, yu, sounds like the word for richness or plenty, and it is believed that eating fish will help your wishes come true in the future.
Another very popular food during the Dragon Boat Festival is Zongzi. This tasty food is made of rice dumplings with meat, peanut or other delicious food in bamboo leaves. The tradition of Zongzi is meant to remind us of a great man, Qu Yuan.
The 50-minute program tries to bring something new by presenting more cultural elements(元素),such as eating habits and the quality of eating.A bite of China is _______.
| A．a book | B．a documentary |
| C．a guide book | D．a newspaper |
The underlined phrase means_____ .
| A．小蜡烛 | B．点蜡烛 |
| C．彩色蜡烛 | D．点燃的蜡烛 |
In this part the documentary tells us about Chinese food ______ in the history.
| A．cooking | B．eating |
| C．making | D．meaning |
If you are asked to continue the passage which of the following can appear in it?
| A．If a boy is born by one of your friend , you may get six eggs. |
| B．It is tradition to serve a whole fish last at a party in China. |
| C．Noodles are more preferred in the north than in the south. |
| D．There are many kinds of Zongzi during the Dragon Boat Festival. |
Smog is a big problem in many Chinese cities. But it seems that besides wearing a mask, few of us know what has caused the smog and what to do to beat it. Chai Jing, a former news interviewer with CCTV, discussed the questions in her documentary Under the Dome.
The 103-minute film was on websites on Feb 28. In the film, Chai visits polluted places and talks to officials and scientists. She thinks that burning too much coal and oil are the main causes of PM2.5 and smog.
To solve the problem, Chai suggests that we should clean our coal and oil or replace them with cleaner energy such as natural gas.
In her film, Chai also emphasized (强调) that everyone can do something to help control smog too. For example, we can live a greener life by using more public transport. Or if we see things that could harm the environment, we can try to stop it. In the film, when she sees a restaurant cooking without any suitable filter facilities (过滤设备), she calls the hotline 12369. The restaurant installed the filter a week later.
Chen Jining, the new minister of environmental protection, praised Chai. “This film encourages ordinary people to take notice of the environment. This is what we need in the future.”What is the main cause of smog according to Chai?
| A．Setting off too many fireworks. |
| B．Burning too much coal and oil. |
| C．Too many cars in big cities. |
| D．Too many factories and companies. |
Which of the following is NOT included in Chai’s suggestions towards reducing smog?
| A．Using cleaner energy. |
| B．Cleaning coal and oil. |
| C．Using public transport. |
| D．Replacing coal with wind energy. |
What can we tell from the story?
| A．Only factories produce heavy smog. |
| B．Only the government can control smog. |
| C．Smog can’t be controlled by ordinary people. |
| D．Living a green life can help reduce smog. |
What’s Chen Jining’s attitude towards Chai’s film?
| A．He didn’t watch it. | B．He thought highly of it. |
| C．He disagreed with it. | D．He disliked it. |
Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents' home in Missouri for Christmas. I stopped at a gas station about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing in line at the cash register(收款台), I said hello to an older couple who were also paying for gas.
I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend's. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.
I wrote him and his wife a thank-you note for helping me. Soon I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.
Years later, , I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I'd left the lights on all day, and the battery was dead. Then I noticed that the Friendly Ford dealership--a shop selling cars--was right next door. I walked over and found two salesmen in the showroom.
"Just how friendly is Friendly Ford?" I asked and explained my trouble. They quickly drove a pick-up truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot , he said.
"Thank you"--two powerful words. They're easy to say and mean so much.What happened when the writer found smoke coming out of his car?
| A．He had it pulled back to the gas station. |
| B．He pushed his car to a car dealership. |
| C．The couple passing by offered to drive him home. |
| D．He called his friend for help. |
Which of the following has the same meaning as the underlined sentence, “Just how friendly is Friendly Ford”?
| A．What can I do for you? |
| B．Would you please help me? |
| C．Can I explain my problem? |
| D．Do you have time to drive me home? |
When the salesman received the writer’s thanks-note, he must be _____.
| A．moved | B．worried |
| C．nervous | D．calm |
Which may be the best title of the passage?
| A．My two powerful words | B．My two experiences |
| C．My car problems | D．My thank-you notes |
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