A telescope, called Gaia, is being designed by astronomers in Europe, and it couldn’t be more different from Pan-STARRS, which is another telescope being designed. While Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be looking at our entire galaxy (銀河系).

Gaia is designed to draw a map of the Milky Way, our home galaxy. Just as a map of your town gives you a picture of where things are located, Gaia’s map of the galaxy will tell astronomers where the stars are. Over five years, Gaia will observe (觀察) about a billion stars and other objects in our galaxy. Each object will be observed about 70 times.

Gaia will be sent into space connected to a rocket. It contains two telescopes, each focused at a different angle (角度). These two telescopes act like Gaia’s “eyes”. The reason why humans can see things in 3D is that we have two eyes focused on the same object, at slightly different angles. By using two telescopes like eyes, Gaia can produce the first 3D map of the positions of the stars it views.

Gaia, which is to be sent into space, will be a powerful telescope. If you were to use it on Earth, for example, you could stand 600 miles away from your best friends and still get a clear picture of their hair.

Gaia is one of more than a dozen telescopes being designed by scientists right now. The next generation of telescopes will reveal new parts of our universe that will seem surprising. The universe, with all its planets, stars and other strange objects, is a puzzle with pieces that we can see by using powerful telescopes.

1.How many different angles can Gaia focus at each time?

A. 2. B. 3.

C. 4. D. 5.

2.The map to be drawn by Gaia ______.

A. can show every building on Earth

B. can show you where your town is

C. will just show the stars around Earth

D. will show where the stars are in our home galaxy

3.What’s Paragraph 4 mainly about?

A. What Gaia will do in space.

B. When Gaia will start to work.

C. How powerful Gaia will be.

D. What Gaia will do to Earth.

4.The underlined sentence in the last paragraph suggests that the next generation of telescopes _______.

A. seem very surprising to scientists

B. will not be put into use in a short time

C. will just look at new things in universe

D. will be more powerful than the old generations

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：天津市南開區(qū)2017屆高考三模英語試卷 題型：單項填空

一 What’s that noise?

一 Oh, I forget to tell you. The new machine .

A. is testing B. was being tested

C. is being tested D. has been tested

查看答案和解析>>

科目：高中英語 來源：河南省商丘市2017年高三下學(xué)期第三次模擬考試英語試卷 題型：短文填空

Chinese Women’s Volleyball team stood1.the top of the Olympic podium for the third time in the history of volleyball at the 2016 Rio Olympics.

Coach Lang Ping also made her own history. She has become2.first to win Olympic gold medals as a coach and player. At the 1984 Los Angeles Olympics, she and her teammates got their first Olympic medal. Since then, Chinese Women’s Volleyball team3. (think) as a flagship by all Chinese people for their fighting spirit.

At the 2016 Rio Olympics, Chinese Women’s had a bad start. They finished fourth in the group stage, after4. (fail) in 3 consecutive games. Lang Ping, the coach, challenged her players to find ways to grow from their struggles with the world watching. Lang always believed that her players had the talent and 5.(determine) to complete in the top volleyball teams in the world.

They did make it. Chinese Women’s volleyball team exhibited the same fight a year ago 6.they played the World Cup in Japan, and then got to Rio de Janeiro and worked through women initial rough Olympic moments.

Lang Ping challenged her players to support one7.through the ups and downs, and to grow from each defeat and triumph on the pressure-packed Olympic stage. They responded, and seemed to play 8.(good) than before when the moments were critical.

Lang Ping has not just trained 9.shaped Chinese Women’s Volleyball team. What she does is more than simply arranging players, but cultivating them.

“The spirit of Chinese Women’s Volleyball team is never to give up. My duty as a coach is to instruct this young team 10. (carry) on this spirit,” said Lang.

查看答案和解析>>

科目：高中英語 來源：甘肅省天水市2016-2017學(xué)年高一下學(xué)期期中考試英語試卷 題型：單項填空

On the contrary, I think it is Truman, ________ you, ________ to blame.

A. more than; are B. less than; who are

C. rather than; that is D. rather than; is

查看答案和解析>>

科目：高中英語 來源：甘肅省天水市2016-2017學(xué)年高一下學(xué)期期中考試英語試卷 題型：單項填空

We usually takes turns _____ cleaning, and today it is my turn______ it.

A. to do; doing B. do;do

C. done;doing D. to do; to do

查看答案和解析>>

科目：高中英語 來源：2017年高考原創(chuàng)押題卷（一）英語試卷 題型：短文填空

Zhangjiajie is already home to the world's longest and tallest glass bridge, but now architects have gone much 1. (far)．

Two world?famous architects, who won a design 2. (compete), have designed a transparent footbridge. It 3. (expect) that it will cost over ￡4 million 4. (build)．

The bridge will be made up of two layers, so there are some options for nervous visitors. The upper level that connects the two rock faces is in 5. shape of a disk and doesn't have a see?through floor. A winding black stone path leads fearless explorers from one peak to the other. Surrounding the path 6. (be) a layer of water two centimetres thick, which is sprayed onto the path every seven minutes 7. special equipment creating a temporary cloud and mist.

However, the lower level is where things start to get really 8. (frighten). The floor is 100 per cent glass, 9. (allow) brave visitors to look at the valley below. As well as walking across the hair?raising bridge you can also sleep in one of three pavilions(樓閣), all of 10. offer incredible views.

查看答案和解析>>

科目：高中英語 來源：K12教育質(zhì)量保障聯(lián)盟山東省2017屆高三5月打靶卷英語試卷 題型：書面表達

假定你是學(xué)校志愿者團隊的學(xué)生李華，為維護城市自然環(huán)境，五月六日你們班到中山公園參加了環(huán)保志愿者活動。請你用日記的形式記敘此事。

內(nèi)容包括：1.活動內(nèi)容：撿拾垃圾，分發(fā)傳單…

2.你對本次活動的感想。

注意：1.詞數(shù)100左右；

2.日記的開頭已為你擬好，不計入總詞數(shù)。

提示詞：傳單leaflets

May 6th Saturday Fine

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

___________________________________________________________________

查看答案和解析>>

科目：高中英語 來源：湖北省襄陽市2017屆高三第二次適應(yīng)性考試（5月）英語試卷 題型：閱讀理解

English teacher and Internet entrepreneur (企業(yè)家) Jack Ma founded Alibaba 18years ago in his tiny apartment in Hangzhou, China. Now, Ma has become the richest man in China. Every current entrepreneur and business leader should learn from how a Chinese English teacher became such a great success.

Start here, go anywhere. Recognizing the importance of English, young Ma would ride his bike to a nearby hotel and guide foreigners around the city just to learn and practice the language.

He has vision and he had help. Ma saw the Internet’s enormous potential to bridge businesses across China’s huge population early on. So he and his wife brought 17 friends together and pooled ＄60,000 to start the company. That formed the basis for the company’s dynamic partnership structure and unique culture.

Big problems lead to big opportunities. China’s lack of infrastructure (基礎(chǔ)設(shè)施) has always been a problem for the enormous nation’s small businesses. Alibaba solved that and now accounts for 80% of the country’s e-commerce.

Innovation comes from unique individuals who think and act differently. Everyone talks about changing the world and making tones of money these days, but those who actually do it are exceptional individuals with breakthrough ideas, uncommon vision and a passion to do great work.

What’s is in a name? Jack Ma was sitting in a San Francisco coffee shop when he thought of how Alibaba overheard the secret of the 40 thieves in his story —“open sesame (芝麻)”—and unlocked untold riches. He simply wanted his company to have a global and interesting name, and realized that Alibaba was a story known across the world. As an additional bonus, Ma said that because it begins with A, it also appears at the top of lists.

1.The article is about ______.

A. Jack Ma’s life story B. the secrets to Jack Ma’s success

C. Jack Ma’s business team D. the development of Alibaba

2.According to the article, the first step in Jack Ma’s success came from ______.

A. mastering the English language B. the unique culture of his partnership

C. innovation from his team D. the foundation of his company

3.Jack Ma named his company after Alibaba because ______.

A. it begins with an A

B. his team worked out such a good idea.

C. inspiration came to him when he was listening to a story.

D. it came from a story that is well-known around the world.

4.Which of the following words best describe Jack Ma?

A. Ambitious and creative B. Humorous and innovative

C. Strict and intelligent D. Passionate and considerate

查看答案和解析>>

科目：高中英語 來源：2017年高考英語考前《考試大綱》調(diào)研卷6 題型：七選五

Technology sometimes goes wrong. And the more you use technology, the more you know it can go wrong. A connection drops. A printer will not print or an app crashes. Tech troubles can let users down quickly. First reactions may be to scream，throw the device（設(shè)備）against the wall, or cry. 1. By following these steps, you could solve some of the most common tech problems on your own.

Search the Web. Learn about your tech problem on a search website, such as Google. See what others have experienced. Find expert articles about solving the problem. If your issue is with recent technology, such as a software update, be sure to look for the most recent articles. 372.

Check connection speed. Maybe you find that streaming, downloading orupdating is moving slowly. 3. You may think something is wrong with your device when, really, your network is just noe. A website such as Speedtest. net can check your connection speed.

4. Make sure you have the most recenl version of apps and software. You might ba expperiencing a problem from a bug（漏洞）that has been fixed in an update. But if you have not yet had the latest version you may miss the solution.

Ask the developer. 5. You can communicate with developers over email, Twitter or a contact form on their website. Explain the issue giving as much detail as possible, including the device you are using and the problem you are having.

A. Update.

B. Fix bugs.

C. Tech tips from years ago may not work now.

D. Contact the developer of the app or software.

E. Have you ever struggled when technology went wrong?

F. First, be sure to check your Internet connection speed.

G. However, you may be able to solve the problem by yourself.

查看答案和解析>>

同步練習(xí)冊答案