For more than twenty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships traveling through space, on the chance that someone may be receptive to such messages.
Scientists are using powerful radio telescopes to listen to signals from about 1,000 stars, all within 100 light years of earth. In addition, they will scan the entire sky to “listen” for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight channels at one time. Scientists are looking for any signal that stands out from the background noise.
Of the 200 billion stars in the Milky Way galaxy (银河星系), scientists find that 5% are like our sun. Perhaps half of them have a planet like earth. Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution (进化) of life. Based on the inhabitable (that can be lived in) planets in our galaxy, most scientists agree that chances are likely that one or more of these planets support some life.
However, many scientists wonder whether intelligent (智能的) life exists on other planets. Some believe that twenty years of searching without any intelligible messages shows that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely.
Other scientists believe that our search hasn’t been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time, some scientists think it is likely that civilization much more advanced than ours have developed. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.
According to the passage, how many planets in our galaxy might be inhabitable?
A. 5 billion． B. 10 billion. C. 15 billion. D. 200 billion
The first paragraph in this passage is mainly about ________ .
A. how scientists are looking for signs of life on other planets
B. why scientists are looking for signs of life on other planets
C. where scientists are looking for signs of life on other planets
D. when scientists are looking for signs of life on other planets
Which of these statements is True based on the information in the passage?
A. The earth is one of the oldest planets in our galaxy.
B. Most scientists believe that there is intelligent life on other planets.
C. Scientists don’t believe that there might be life on other planets.
D. Scientists are trying different ways to find signs of life on other planets.
每日10分钟口算心算速算天天练系列答案科目：高中英语 来源：2015届黑龙江牡丹江一中高一下期期末考试英语卷（解析版） 题型：信息匹配
1. If you use it often and in the right ways, you will become a more skilled thinker and your ability to focus will increase. But if you never use your brain, or abuse it with harmful chemicals, your ability to think and learn will decrease. Here are some simple ways that may help you.
2.
Don’t you feel drained(劳累) after a couple of hours of watching TV? Your eyes are sore and tired of being focused on the light box for so long. When you feel like relaxing, try reading a book instead. If you’re too tired, listen to some music. When you’re with your friends or family, leave the tube off and have a conversation. All of these things use your mind more than television and allow you to relax.
Exercise.
I used to think that I’d learn more by not exercising and using the time to read a book instead. 3. It improves productivity(生产力) during the time afterwards. Using your body clears your head and creates a wave of energy. Afterwards, you can concentrate(专注) more easily.
Read challenging books.
If you want to improve your thinking and writing ability, you should read books that make you focus. Reading a classic novel can change your view of the world and will make you think in more elegant English. 4. Re-read it when necessary, and you’ll soon grow accustomed(习惯) to the author’s style.
Early to bed, early to rise.
5. You’ll be the most energetic if you go to bed early and don’t sleep for more than 8 hours. In my experience the early morning hours are the most productive. If you have the opportunity, take a 10-20 minute nap(小憩) when you are hit with a wave of drowsiness(睡意).
A. Take a time to reflect.
B. Reduce television watching.
C. Spending some time alone will be helpful.
D. Your brain needs exercise just like a muscle (肌肉).
E. Don’t be afraid to look up a word if you don’t know it.
F. Nothing makes it harder to concentrate than sleep loss.
G. But I realized that time spent exercising always leads to greater learning.
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科目：高中英语 来源：2014届吉林省龙井市高二下学期第一次月考英语试卷（解析版） 题型：阅读理解
A 16-year-old South Dakota boy who became lost while hunting and spent 16 hours alone in the Black Hills National Forest says he was scared but still managed to make a survival plan.
Austin DuVall, of Rapid City, became lost on Nov.3 while hunting with his father. He ran after a deer, and soon found himself alone. “I ran after a deer, but I didn’t get it,” he said. “Then I was really lost.”
He had only his hunting rifle(步枪) and the clothes he was wearing. He had no food or water and had nothing that could help him find his way to safety. “I knew that no one could hear me. I decided to just sleep and get up in the morning and find safety,” he said.
Austin climbed up on a rock and slept through the night. Then he awoke and relied on skills he learned in a hunter safety course. He followed a stream to an occupied cabin. The couple there called his parents and cooked him a breakfast. “ It’s probably one meal I’ll never forget for the rest of my life,” he said.
After DuVall’s disappearance, a lot of emergency officials and more than 100 volunteers went searching for him. “He wasn’t sitting there waiting for someone to come and find him,” said his father, Steve DuVall. “We didn’t find him; he found himself.”
Mike Kintigh, regional supervisor for the Game, Fish & Parks Department, said one or two hunters will go missing each year, but rarely for more than 24 hours. “We’re a little bit unique in the Black Hills as it’s hard to get lost for a very long time. That’s because we’ve got so many roads here compared to the Rocky Mountains,” Kintigh said. “You can certainly spend a very uncomfortable night in the woods like Austin did.”
1.After Austin realized he lost his way, he ___.
A．was very nervous but excited
B．cried aloud for help
C．tried to find a safe place
D．decided to sleep in the wild
2. Who saved Austin according to his father?
A．The couple in the cabin.
B．Emergency officials.
C．Volunteers.
D．Himself.
3.From what Mike Kintigh said, we learn that _______.
A．if someone gets lost in the Rocky Mountains, it is hard to find a way out
B．too many people go missing in the Black Hills every year
C．the rescue team is skillful enough to find the lost people in less than 24 hours
D．people who are lost in the Black Hills have to spend a night in the woods
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科目：高中英语 来源：2013届湖南省株洲市高二上学期期末考试英语试卷（解析版） 题型：阅读理解
Dear Customers,
I love slipping (滑落) into a comfortable chair for a long read—as I relax into the chair, I also relax into the author’s words, stories and ideas. The physical book is so elegant that it disappears into the background, and what remains is the author’s world.
Today, we at Amazon are excited to announce Mindle, a wireless, portable reading device with instant access to more than 90,000 books, magazines and newspapers.
We’ve been working on Mindle for more than three years. Our top design objective was for Mindle to disappear in your hands—to get out of the way—so you can enjoy your reading. We also wanted to go beyond the physical book. Mindle is wireless, so whether you’re lying in bed or riding a train, you can think of a book, and have it in less than 60 seconds. No computer is needed—you do your reading directly from the device.
We chose the same wireless technology used in advanced mobile phones. But unlike mobile phones, there are no monthly wireless bills, no service or data plans, and no yearly contracts. There is no software to install (安装，设置)。 We want you to get lost in your reading and not in the technology.
Mindle uses a new kind of display called electronic paper. Sharp and natural with no strong light, reading on Mindle is nothing like reading from a computer screen. Mindle weighs only 10.3 ounces—less than paperback—but can carry two hundred books.
Enjoy learning about Mindle and many thanks!
Jeff Bezos Founder & CEO
1.This passage most probably is a(n)________.
A. advertisement
B. news story
C. lab report
D. letter of thanks
2.From the passage we learn that Mindle is a device which ________.
A. has neither wires nor weight
B. is operated by a computer
C. disappears while you read
D. can find a book within one minute
3.With the device, the reader is able to ________.
A. enjoy reading when driving a car
B. improve reading skills
C. gain access to free software
D. get rid of heavy books made of paper
4.Different from mobile phones, Mindle________.
A. has a much more friendly screen
B. can work in the absence of electricity
C. doesn’t involve regular bills
D. is wireless and can be used anywhere.
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科目：高中英语 来源：2014届河北省高一3月月考英语试卷（解析版） 题型：单词拼写
根据下列句子及所给汉语注释，在对应位置上写出空缺处各单词的正确形式。（每空只写一词）
1.Things fall to the ground because of the earth’s ________(万有引力).
2.Two children ________ (溺死) after falling into the water.
3.The ________ (场景) of this play is set in Ireland.
4.Each of us has our strengths and ________ (弱点).
5.He ________ (道歉) publicly the day before yesterday.
6.Today’s festivals have many _______ (起源)， some religious, some seasonal, and some for special people or events.
7.Easter is an important religious and social festival for ______ (基督徒) around the world.
8.What will happen to you if you don’t eat a _______ (平衡的) diet?
9.The fact is that I earned my passage by working as an unpaid hand, which ________ for (导致)my appearance.
10.They laid eggs too and _______ (存在) on the earth for more than 140 million years.
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科目：高中英语 来源：河南省濮阳市2010届高三第五次模拟考试英语试卷 题型：阅读理解
A political scientist from Indiana University whose work exploring how people come together to protect their collective （共有的）resources may provide important clues in the fight against elimate change has become the first woman to win the Nobel prize for economics.
Elinor Ostrom, 76, shares the award with fellow American academic Oliver E. Williamson, 77. The Royal Swedish Academy of Sciences announced to the world the pair had been chosen to win the 40th prize in economic sciences.
For Ostrom, the award came, as she showed, as a “big surprise”. To rise to the summit of her area of learning has been an big journey, as she has had to struggle against her own weaknesses and the impediments （妨碍）of the system. At school in Los Angeles she suffered from stuttering（口吃）. She also faced the hurdles （障碍） common to most women of her generation entering the sciences--she was discouraged from taking a PhD when she applied for graduate school.
Her field of study has been striking for how cross-disciplinary （交叉训练的）it is. Early on she gained a reputation for bringing economics, political science and sociology together.
What interests her is how common property can be managed successfully through groups in society. One of the first subjects that interested her was management of water resources.
The findings of her research have been striking, because they have challenged the traditional idea that common property is poorly managed unless it is either regulated by government or privatized. She has shown how individuals can work together and form collectives that protect the resource at hand.
“A lot of people are waiting for more international co-operation to solve global warming,” said Ostrom, “It is important that there is international agreement, but we can take steps at family level community level, and national level … There are many steps that can be taken. That will not solve it on their own but continuously will make a big difference.”
1. Why was Ostrom not advised to take a PhD?
A. Because she was a stutter who didn’t speak fluently.
B. Because she was a woman who was prejudiced then.
C. Because she was as common as other women in science.
D. Because she didn’t receive a degree of master yet.
2. Which of the following statements may Ostrom agree to?
A. Only government can make full use of common property.
B. Private enterprise can control individual behavior.
C. Different people should work together to protect the resources.
D. Individuals play a minor role in fighting climate change.
3. Ostrom was awarded the Nobel Prize for economics because _______.
A. she brought economics and political science into sociology
B. she predicted the breakout of the global financial crisis
C. she worked on the relationship between individuals and government
D. she put forward a new theory to help fight against climate change
4. The passage mainly tells us that ________.
A. the Nobel Prize for economics was first won by a woman
B. Elinor Ostrom’s work may help fight poverty
C. the first woman won the Nobel Prize in America
D. the Nobel Prize for economics is shared this year
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