When it comes to long, distance space travel, the biggest, problem is that spaceships can only get as far as the fuel onboard allows. In 1964, a British writer Clarke came up with the idea of "solar sailing" in his science fiction. He wrote of large, mirror﹣like sails that collect power from the sun and free spaceships from the limitation of fuel.
This sci﹣fi idea was first successful brought to reality in 2010 by Japan's IKAROS satellite.Ever since then, the technology has improved mission by mission, with the latest being NASA's Advanced Composite Solar Sail 3(ACS3). NASA has recently announced that it's going to team up with Lithuania's satellite﹣building company NanoAvionics to test its new sail ﹣in low﹣Earth orbit.
To many, a solar sail may look like a giant solar panel, but it actually works very differently.While solar panels take in energy from the sun and change it into power, solar sails use Photons given off by the sun to create direct power. Besides, solar panels are big and heavy to carry, while solar sails are just the opposite.
According to Abbott, the CEO of NanoAvionics, the upcoming low﹣Earth orbit trial with NASA, if successful, will be followed with deep﹣space missions that involve larger solar sails. Theseare ideal for low﹣cost and long﹣distance space travel because fuel will no longer be a problem.
"It started as a sci﹣fi dream," Popular Mechanics reporter Jennifer Leman wrote. "Now it could be the future of space flight."
(1)What can we say about solar sailing according to the first two paragraphs?
A. |
It was widely used in space travel. |
B. |
It was tried by IKAROS satellite. |
C. |
It was from the creative idea by Clarke. |
(2)Which of the following words best describe solar sails compared with solar panels?
A. |
Big and heavy. |
B. |
Small and light. |
C. |
Powerful and large. |
(3)What does the underlined word Thesein paragraph 4 refer to?
A. |
À. Larger solar sails. |
B. |
Deep﹣space missions. |
C. |
Long﹣distance space flights. |
(4)What is the best title for the text?
A. |
Solar Sail: the Latest Technology |
B. |
Solar Sail: from Dream to Reality |
C. |
Solar Sail: a New Kind of Spaceship |
Shopping used to mean actually going to shops, but nowadays, you can shop without even leaving your house. Just sit in front of your computer, click your mouse and your things will be sent to your house in a couple of days.
November 11th is a big day for people who like shopping online. On that day last year, many online stores offered a big discount and free delivery service. The biggest online shopping sites in China,Taobao.com and Tmall.com ,sold things worth 19.1 billion yuan in total.
“Goods online are often much cheaper. It also saves me a lot of time. And we often have more goods on many online stores than in shopping malls,” Wang Xin, an online shopping lover in Beijing, said to China Daily. She stayed up very late for a lot of cheap goods online. She spent several thousand that day.
Another big advantage of online shopping is that it helps people get things from different cities, even different countries, with ease. “I like eating duck neck very much and I often buy it on Taobao from shops in Wuhan. It’s much more delicious than what our local (当地的) stores sell, but cheaper,” said Zang Xin, a girl in Yangzhou.
While enjoying online shopping, many people also have worries, especially for middle school student buyers. Young students are easily attracted by advertisements on the Internet and buy things they don’t need.
“Middle school students should pay more attention to their study. Searching for things wastes their time,” said Jing Chunling, an education expert. “Besides, online shop owners have no idea of the ages of their buyers. Anyone can easily buy things that they want to. Some of goods are even bad for young students such as cigarettes and wine.”Nowadays many people like shopping online instead of _________.
A.clicking their mouse | B.paying money |
C.sitting in front of their computers | D.going to shops |
What does the underlined phrase “with ease” mean?
A.轻松地 | B.困难地 | C.便宜地 | D.昂贵地 |
According to the article, which of the following is not an advantage of shopping online?
A.It can save people time and money. | B.Online stores have better quality goods. |
C.People can buy things from different places. | D.Online stores may have more kinds of goods. |
People worry about students shopping online because students _________.
A.have no time to waste and are easily attracted to buy bad things |
B.may depend too much on online shopping |
C.haven’t met the online store owners |
D.may buy nothing with a lot of money |
The article is mainly about _________.
A.how to buy good products online |
B.how to find good online stores. |
C.advantages and disadvantages of online shopping. |
D.dangers of shopping online for students. |
How dangerous it would be if there was a fire! Winter is the time for us to learn a lot more about fire, especially what to do if we are caught in a fire.
1. Shout out If you smell smoke or see fire, shout out “Fire!” Shout as loudly as you can, because people may be asleep. |
2. Call 119 Never try to put out the fire yourself, even if it is a very small one! Get help from your parents or call 119. |
3. Keep down close to the floor If there is a lot of smoke in your room, keep down close to the floor. |
4. Test the door Test the door before you open it. If the door is cool, open it carefully. If the door is hot, do not open it! Try to find a different way out. |
5. Get out If you can, get out of your home as soon as possible. |
6. Don’t use the lift Never use the lift during the fire. It may also go wrong. |
7. Don’t go back Never go back into a burning building! |
The passage is mainly about _____
A.how to look after yourself when you are on fire |
B.what to do when you are caught in a fire |
C.when to leave the burning place |
D.why to call 119 when there is a fire |
When people are asleep, what will you do when a fire breaks out in your building?
A.Call 120 for help as quickly as you can |
B.Only wake your parents up fast |
C.Shout out “Fire!” as loudly as you can |
D.Run away as fast as you can and don’t call others |
Why shouldn’t you use the lift when a fire breaks out?
A.Because taking the lift is so slow | B.Because the fire can burn you |
C.Because the lift is too crowded | D.Because the lift may not work |
When a fire is burning, you test the door to ____.
A.find a different way out | B.notice the fire clearly |
C.call for a much quicker help | D.see if it is close |
If you realize you have left an expensive thing at home in a fire, you should
A.go back for it | B.keep down close to the door |
C.not get out | D.not go back for it |
请阅读下面这篇文章,完成下面表格。
I am Jay from Zhuhai Sunshine Middle School. Recently, we carried out a survey on who we prefer to share worries with. We got different answers.
Acording to the chart, those who would like to share their worries with their classmates and friends account for about 71%. It is mainly because they believe that if people are at the same age, they are easy to communicate and understand each other better.
About 22% of the students said they would like to share worries with their teachers and parents. According to them, adults are rich in experience, and that they can handle their problems easily. The rest prefer to keep worries to themselves. As for them, it’s a struggle to get along well with others, some of them said they didn’t want to trust anyone.
As far as I am concerned, I am willing to share worries with my best friends because they’re always kind and understanding. However, if I meet with some serious problems, I’ll be likely to ask my parents and teachers for help, who, I believe, have more experience to give me valuable advice.
Information Card
What is the survey we had about? |
|
How many percents of the students would like to share worries with their classmates and friends? |
|
Why do students like to share worries with their teachers and parents? |
|
What did the students who keep worries to themselves say? |
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Why does Jay share worries with his best friend? |
Do you have a mobile phone? Do you often send text messages(短信) to your friends or family? If you keep sending text messages over and over again, there may be something wrong with your fingers.If you don’t, you may get injured one day.
Text messaging or texting is becoming popular. But scientists have found out that texting can give us problems with fingers. Too much texting can make your fingers uncomfortable. When we press small buttons over and over again, we may have a disease called RSI. RSI is short for Repetitive Strain Injury (重复性力损伤).
Harriet Wilson is a doctor. She has many patients with RSI.If we spend more than 10 to 15 minutes every day, we could have such problems in the future.
Mobile phones are getting smaller and smaller. Texting with a smaller phone is worse than using a larger phone with bigger buttons.
.
If you use a computer keyboard and play video games for long, you may have the same problem. More and more people can find themselves with RSI.
A. So it’s a good idea to use a larger phone. B. Everybody using the mobile phones should be careful. C. And the buttons are getting closer together. D. It’s easy to find out that mobile phones have changed our life. E. She says we should check how much time we are spending in typing text messages. |
What does the writer want to tell us?
A.He wants to ask us not to send text messages with mobile phones. |
B.He wants to tell us to use small mobile phones to send text messages. |
C.He wants to tell us some good ways to communicate with friends. |
D.He wants to tell us the damage(伤害) of sending text messages too much. |
Be Thankful
Be thankful when you don’t already have everything you want.
If you did, what would there be to look forward to?
Be thankful when you don’t know something,
for it gives you the chance to learn.
Be thankful for the difficult times
During those times you grow.
Be thankful for each new challenge(挑战) ,
because it will build your strength(意志) and character(品格).
Be thankful for your mistakes.
They will teach you important lessons
Be thankful when you’re tired,
because it means you’ve made a difference.
It’s easy to be thankful for the good things
A life of rich fulfillment(满足) comes to those
who are also thankful for the setbacks(挫折).
Gratitude(感激) can turn a negative into a positive.
Find a way to be thankful for your troubles,
and they can become your blessings.According to the poem, ________ make us grow.
A.difficult times | B.good things |
C.challenges | D.blessings |
We should thank for new challenges because they will _________.
A.give you the chance to learn | B.build your strength and character |
C.teach you important lessons | D.make your life different |
_________ can turn a negative into a positive.
A.Troubles | B.Gratitude | C.Mistakes | D.Chances |
The underlined word “blessings” probably means “_________” in Chinese.
A.幸事 | B.烦恼 | C.困境 | D.霉运 |
The writer thinks that we should learn to be _________.
A.thankful | B.helpful | C.important | D.negative |