Put an ice cube from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.
You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.
First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze(结冰) again.
After a minute or two you may raise the piece of string and with it you will raise your piece of ice!
This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt, the water will freeze again.We must use when we carry out this experiment.
| A．a fridge | B．some food | C．a table | D．some salt |
How long will it take to carry out this experiment?
| A．More than three minutes. | B．Five minutes or two. |
| C．Only one minute or two. | D．About ten minutes. |
We can learn something about from the passage.
| A．physics | B．biology | C．chemistry | D．maths |
It’s 8:00 a.m. and you are running out of the door. You walk outside and your handbag suddenly says, “Wait! You forgot your keys!” A talking handbag? Yes, it’s true. This “smart bag” can “talk” to the things you often bring with. If you forget your keys or drop your purse, for example, the bag will tell you.
How does it work? There is a “smart chip” in the bag. You put other chips on your phone, purse or keys. Then the bag and the others can “talk” to each other—and you!
SMART CLOTHES
These clothes change colors—while you are wearing them! Is it hot outside? Watch your jacket change from dark blue to a lighter color to protect you from the sun. Did you spill coffee on your white trousers or shirt? No problem. These smart clothes never get dirty!If you go outside with a “smart bag” but forget your keys, your _____ will tell you.
| A．mother | B．teacher |
| C．bag | D．keys |
Which of the following sentences about a “talking handbag” is TRUE?
| A．It is smart and it can chat with you. |
| B．It can tell you if you forget something. |
| C．It can talk to you when you are alone. |
| D．It has a smart chip and works as a phone. |
Smart clothes change colors when you _____.
| A．are wearing them | B．are washing them |
| C．put them on | D．make them dirty |
Who needs the “smart clothes” most?
| A．Someone working in a library. |
| B．Someone who has a bad memory. |
| C．Someone working in a restaurant. |
| D．Someone who always loses his or her mobile phone. |
| Name |
Tudou |
Youku |
Douban |
| Website |
www.tudou.com |
www.youku.com |
www.douban.com |
| Founder(建立者) |
Wang Wei |
Gu Yongqiang |
Yang Bo |
| Founding time |
April, 2005 |
June, 2006 |
September, 2004 |
| Idea |
“Show yourself like a superstar.” |
“Let the whole world watch us.” |
“Join us more, and you will get more.” |
| Feature(特点) |
Sharing videos with other people |
Watching microvideos on the C2C service platform |
Making friends with others and editing what you like |
If you want to watch micro-videos, you’d better choose _____.
| A．www.youku.com | B．www.baidu.com |
| C．www.tudou.com | D．www.douban.com |
Tudou was founded _____ months earlier than Youku.
| A．seven | B．fourteen |
| C．twenty-one | D．twenty-eight |
Which of the following is TRUE according to the information above?
| A．Douban is the youngest of the three. |
| B．You can edit what you like on Tudou. |
| C．Wang Wei helps us make more friends. |
| D．The idea of Youku is “Let the whole world watch us.” |
A terrible earthquake happened in Japan on March 11th, 2011.As a result of the extreme (激烈的) earthquake, the huge waves washed away all the coast(海岸)area northeast of the country. The more serious danger is nuclear power station explosion (核电站爆炸). Though a lot of countries including China have sent much help to Japan, the Japanese are still in trouble, because many people were killed in the disaster.
And some earthquakes even cause tsunamis (海啸). It was said that 300 thousand people died in Indonesian tsunami as a result of the earthquake in 2004.
How awful it is when we talk about them! As natural phenomena (自然现象), earthquake happens just like it would rain and thunder. People can't avoid earthquakes but can try our best to predict and evacuate (疏散) before it happens. Building stronger houses and teaching people how to protect themselves when there is an earthquake are also good ways to reduce damage.
Information card
| The date of earthquake in Japan in 2011 |
|
| What's the more serious danger in Japan after the extreme earthquake？ |
|
| The disaster which usually comes with earthquakes |
|
| The number of the people who died in Indonesian tsunami |
|
| How to reduce damage？ |
|
She wants know more about it. |
E. How to Cook Delicious Food |
Two men in Shanghai have been dead from H7N9, while a woman in Anhui province is seriously ill from the virus(病毒), the National Health and Family Planning Commission(计划生育委员会) said on Sunday. This is the first time a human from H7N9 has been found. Little research has been done on this unknown bird flu, and there are no vaccines(疫苗) against the virus.
The reported deaths were of an 87-year-old man who was found ill on Feb 19 and died on March 4, and a 27-year-old man who was found ill on Feb 27 and died on March 10. The third person, a 35-year-old woman from Chuzhou, Anhui province, is in hospital in Nanjing, Jiangsu province. It is still unknown how the three became ill, and experts said there is no evidence(证据) that they caught the illness from each other. There is also no evidence of anyone who stay closely with them being ill. To be away from H7N9 and stay healthy, remember the following things.
1. Go to crowded places as less as possible, especially the elderly and children. Pay attention to personal self-protection.
2. Keep the air in door fresh. Often wash your hands. Cover the nose and mouth when coughing and sneezing(打喷嚏). Wash hands after cleaning the nose and mouth.
3. Eat clean food. Don’t put raw(生的) and cooked food together. And do not eat raw or undercooked meat, eggs and other food.
4. Take more exercise, have enough sleep and rest, so that you can get yourself stronger.
| A．People know H7N9 very well. |
| B．No people have heard about it. |
| C．People know little about it. |
| D．Only Chinese people know about it. |
| A．On February 19 | B．On February 27 |
| C．On March 4 | D．On March 10 |
| A．Shanghai | B．Nanjing |
| C．Chuzhou | D．No one knows |
| A．在下面煮的 | B．煮熟的 |
| C．未煮过的 | D．夹生的 |
| A．Close the window so that birds can’t fly in. |
| B．Don’t mix raw and cooked food together. |
| C．Do more exercise to keep fit. |
| D．Don’t go to crowed places. |
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