While all my classmates seen to be crazy about a one-way ticket to Mars, I’d rather say Mars is totally unsuitable for human existence. People won’t have enough food supplies there, and the terrible 题目和参考答案——青夏教育精英家教网—

精英家教网 > 高中英语 > 题目详情

While all my classmates seen to be crazy about a one-way ticket to Mars(火星), I’d rather say Mars is totally unsuitable for human existence. People won’t have enough food supplies there, and the terrible environment would make it impossible for them to live a long life. Besides, the journey won’t be safe. Can anybody explain to me just why people would go to Mars, never to return?
Steve Minear, UK
Here are the things you can think of: the desire to explore a foreign and unique environment, the excitement of being the first humans to open up a new world, the expectation of fame and glory…For scientists there is another reason. Their observations and research will probably lead to great scientific achievements.
Donal Trollop, Canada
There are already too many people on the Earth. I think that sometime before the end of the century, there will be a human colony(殖民地)on Mars. It will happen when people finally realize that tow-way trips to the red planet Mars are unnecessary. Most of the danger of space Flight is in the launches(发射) and landings. Cutting the trip home would therefore reduce the danger of accidents, save a lot of money, and open the way to building an everlasting human settlement on another world.
Enough supplies can be sent on ahead. And every two years more supplies and more people will needs, and Mars is far more pleasant than the other planets in the outer space.
Paul Davies. USA
小题1: The main purpose of Steve Minear’s writing is .

A．to report his classmates’ discussion	B．to invite an answer to his question
C．to explain the natural state of Mars	D．to show his agreement on going to Mars

小题2:Which of the following best states Donal Trollop’s idea?

A．There is a plan to send humans to Mars.

B．There are many reasons for going to Mars.

C．Scientists become famous by doing research on Mars.

D．It is possible to build an Earth-like environment on Mars.

小题3:Paul Davies points out that .

A．humans need only a one-way ticket to Mars.

B．two-way trips to Mars will be made safe soon

C．it is easy to reduce the danger and cost of flights to Mars

D．it is cheap to build an everlasting human settlement on Mars

小题4:What does Paul Davies think of human existence on Mars?

A．Humans will have to bring all they need from the Earth.

B．Humans will find Mars totally unsuitable for living.

C．Humans can produce everything they need.

D．Humans can live longer in the colony on Mars

小题1:B
小题2:B
小题3:A
小题4:C

小题1:此题为写作目的的归纳。从Can anybody explain to me just why people would go to Mars, never to return?不难得出答案B.
小题2:此题为归纳大意试题。从Here are the things ……: the desire to explore……,the excitement……, the expectation ……For scientists there is another reason. 可以得出答案为B.
小题3:此题为细节判断。从Paul Davies 所说的第一段中It will happen when people finally realize that tow-way trips to the red planet Mars are unnecessary.可以判断出答案为A.
小题4:此题为细节判断。从Paul Davies 所说的第二段中Mars has all the materials for a colony to produce or make everything it needs可以判断出答案为C.

练习册系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：高中英语 来源：不详 题型：阅读理解

We do not know exactly how many whales there are in the sea because we can’t count them. But we believe at the beginning of the eighteenth century there were 105,000 humpback whales and 120,000 right whales. At the beginning of the twentieth century there were 75,000 humpbacks and 80,000 rights.
Since 1900 their numbers have fallen very quickly. Between 1935 and 1950 the number of humpbacks fell from 20,000 to 10,000 and since 1950 the number has fallen to only 6,000. The number of right whales has fallen even faster. In 1935 there were 25,000. The number fell to 6,000 in 1950 and since 1950 the number has fallen to 4,000. Men have always been hunters. Thousands of whales have become victims(牺牲品). It’s time to do something to protect whales.
小题1:Which of the following is true?

A．We know the exact number of whales in the sea.

B．It’s easy for us to count whales in the sea.

C．We find it impossible to count whales in the sea.

D．We don’t want to know how many whales there are in the sea.

小题2:The number of right whales has fallen _______.

A．more slowly than that of humpback whales

B．faster than that of humpback whales

C．as slowly as that of humpback whales

D．as fast as that of humpback whales

小题3:The passage is mainly about _______.

A．the number of humpback whales

B．the number of right whales

C．hunting whales

D．the necessity of protecting whales

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

Electricity, like clean water, is a resource that’s often taken for granted. But last summer, when blackouts struck much of the northeastern US, Ontario and Rome, consumers on two continents were given a painful reminder of just how easily broken electricity supplies can be. The massive disorder stranded (使陷入困境)commuters, stopped freezers, shut down businesses and refocused attention on where most of the planet’s power comes from：oil-and-gas-fired generators and nuclear plants, These sources not only pollute the environment but also make many consumers feel unacceptable health risks.
Companies are trying to offer an alternative, clean energy from renewable resources that’s plentiful and portable. Lifton’s Medis Technologies, as well as companies like Hydrogenics and Nanosys, is tapping into fuel cells and dolor panels to give people power whenever and wherever they want it, free from dependence on local grids(电网).
The search for alternative energy is nothing new, but the current trend of innovators is focusing on the goal of making clean and sustainable power a mainstream commodity. For example, the fuel cell, which produces electricity from the chemical reaction between oxygen and hydrogen, has been around for about 150 years, though its commercial development did not begin until the 1960s and then only as part of NASA spacecraft. Today this technology is coming down to Earth in places like Tokyo; in nine European cities, from Stockholm to Porto, each operating three hydrogen-fuel-cell buses; and in Iceland, which is trying to create the first fuel free hydrogen economy by 2030.
When hydrogen and oxygen molecules(分子)combine, the reaction produces heat and water. Fuel cells use this reaction to generate electricity. With the cell phone and gadget(小机件)market in mind, Medis has developed a fuel cell with cheap components that produces little heat and effortlessly reduces waste water without turning to energy consuming pumps.
小题1:What is the passage mainly about?

A．The future of alternative energy

B．How the fuel cells works

C．People’s search for alternative energy

D．The damage done by the blackout last summer.

小题2:What can we know about the fuel cell?

A．Its commercial use began in the 1960s.

B．Today it’s being used in almost every corner of the world.

C．It has been in widespread used for about 150 years.

D．It supplies electricity to make the combination of oxygen and hydrogen possible.

小题3:Which of the following statements is NOT true according to the passage?

A．Lifton’s Medis Technologies is tapping into fuel cells and solar panels.

B．The fuel cell has been around for about 150 years.

C．The fuel cell’s commercial development did not begin until the 1960s.

D．When hydrogen and oxygen molecules combine, the reaction produces o2 and H2O.

小题4:The underlined word “blackouts” in the 1 st paragraph means_____.

A．power failure	B．the delivering of electricity
C．the power of electricity	D．power station

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

"I’ve changed my mind. I wanted to have a telescope, but now I want my dad back." Lucien Lawence’s letter to Father Christmas written after his father had been knifed to death outside his school gate, must have touched every heart. Lucien went on to say that without his father he couldn’t see the stars in the sky. When those whom we love depart from us, we cannot see the stars for a while.
But Lucien, the stars are still there, and one day, when you are older and your tears have gone, you will see them again. And, in a strange way, I expect that you will find your father is there too, in your mind and in your heart. I find that my parents, long dead now, still figure in many of my dreams and that I think of them perhaps more than I ever did when they were alive. I still live to please them and I’m still surprised by their reactions. I remember that when I became a professor, I was so proud, or rather so pleased with myself, that I couldn’t wait to cable my parents. The reply was a long time in coming, but when it did, all mother said was, "I hope this means that now you will have more time for the children.” I haven’t forgotten. The values of my parents still live on.
It makes me pause and think about how I will live on in the hearts and minds of my children and of those for whom I care. Would I have been as ready as Philip Lawrence have been to face the aggressors (挑衅者),and to lay down my life for those in my care? How many people would want me back for Christmas? It’s a serious thought, one to give me pause.
I pray silently, sometimes, in the dead of night, that ancient cry of a poet "Deliver my soul from the sword, and my darling from the power of the dog." Yet I know the death comes to us all, and sometimes comes suddenly. We must therefore plan to live forever, but live as if we will die tomorrow. We live on, in the lives of those we loved, and therefore we ought to have a care for what they will remember and what they will treasure. If more parents knew this in their hearts to be true, there might be fewer knives on our streets today.
小题1:according to the whole text we can see that the first paragraph ________.

A．puts forward the subject of the text

B．shows the author’s pity on the kid

C．acts as an introduction to the discussion

D．makes a clear statement of the author’s views

小题2:In the second paragraph the author mainly wants to explain to us ________.

A．how much he misses his parents now

B．why his parents often appear in his dreams

C．when Lucien will get over all his sadness

D．how proud he was when he succeeded in life

小题3: What feeling did the author’s mother express in her reply?

A．Proud.

B．Happy.

C．Disappointed.

D．Worried.

小题4: In the author’s opinion, the value of a person’s life is ________.

A．to leave behind a precious memory to the people related

B．to have a high sense of duty to the whole society

C．to care what others will remember and treasure

D．to share happiness and sadness with his family

小题5: What does the writer mean by the sentence taken from an old poem?

A．Call on criminals and murderers to lay down their guns.

B．Advise parents stay with their children safely at home.

C．Spend every day meaningfully in memory of the death.

D．Try to keep violence and murder far away from society.

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces (熔炉) that burn their own matter as fuel. When most of the fuel is used up, the star begins to die.
The death of a star is not a quiet event. First there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns.
After the explosion gravity pulls in what’s left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds.
The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can go out. The star becomes black when there is no light. Then a black hole is born!
That’s what we know about black holes. What we don’t know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine.
But if the black hole doesn’t keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words a black hole in our universe could turn into a “white hole” in a different universe. As the black hole swallows light, the white hole shines brightly—somewhere else. But where? A different place, perhaps, or a different time — many years in the past or future.
Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black hole must remain a mystery.
Black holes are a mystery—but that hasn’t stopped scientists from dreaming about them. One scientist suggested that in the future we might make use of the power of black holes. They would supply all of Earth’s energy needs, with plenty to spare. Another scientist wondered if a black hole could some day be used to swallow earthly waste—a sort of huge waste disposal(处理) in the sky!
小题1:When the star begins to die ______.

A．there is no fuel left in it	B．its outer layer goes into space first
C．a huge explosion will happen	D．it doesn’t give off light any longer

小题2:Which of the following doesn’t help produce a black hole?

A．The gravity inside the star is very strong.	B．The light can’t go out of the star.
C．The star becomes smaller and smaller	D．The dying star shines very brightly.

小题3:The black hole ______.

A．continues becoming smaller and smaller all the time

B．goes into another universe and becomes a white hole

C．can pull in everything we know of in the world

D．will appear at another place at a different time

小题4:What’s the best title for this passage?

A．A New Scientific Discovery: Black Holes

B．How Do Black Holes Come Into Being?

C．What Are Black Holes?

D．Travel Through A Black Hole

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

The blue tits(山雀) have been inspecting the nest-box again this year. The male is the house-hunter but the female will make the final choice. He lands at the hole and turns his head to expose his white cheeks as a signal to attract the female from where she has been feeding.
Among many birds that nest in holes, the male has a light-coloured patch on its plumage(鸟羽) which acts as signal for drawing the female’s attention to a suitable nesting-place. Unlike the blue tit, the redstart(红尾鸲) may be only the male that strikingly coloured and the female is not beautiful.
A few years ago I was lucky enough to spot a pair of redstarts in action in a Walsh wood. The male was leading an interested female to holes that he had previously(先前) checked out. He sat at the entrance of each hole and put his head on to show off his white forehead, or his head in to reveal(显露) his tail.
If the female failed to react to his visual signals, the male sometimes sang for extra effect, while gliding towards her on spread wings and tail. Once the female accepts by following the male through the hole the displays stop, you must be at the right place at the right time to watch them.
小题1:How do the blue tits choose their nest?

A．They choose their nest together.

B．The male chooses their nest.

C．The house-hunter chooses their nest.

D．The female chooses their nest.

小题2:The writer was lucky to see ________.

A．how the male made his tricks

B．how an interested female played with the male happily

C．what the male displayed and won the female

D．that the male tried his best but failed to attract the female

小题3:You can spot a pair of redstarts in a Walsh wood ________.

A．at any time

B．regularly

C．in April

D．occasionally

小题4:The writer is probably ________.

A．a bird expert	B．a bird-hunter
C．a bird raiser	D．a scientist

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆) the animal and save the endangered species(物种). That’s a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called “Noah’s Ark”.
Noah’s Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M’s College of Veterinary Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2, 000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A& M, the first-ever attempt at cloning a dog.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
小题1:The aim of “Noah’s Ark” project is to _______.

A．make efforts to clone the endangered pandas

B．save endangered animals from dying out

C．collect DNA of endangered animals to study

D．transfer the nuclear of one animal to another

小题2:According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.

A．available panda eggs	B．host animals
C．qualified researchers	D．enough money

小题3:The best title for the passage may be _______.

A．China’s Success in Pandas Cloning

B．The First Cloned Panda in the World

C．Exploring the Possibility to Clone Pandas

D．China —the Native Place of Pandas Forever

小题4:From the passage we know that _______.

A．Kraemer and his team have succeeded in cloning a dog

B．scientists try to implant a panda’s egg into a rabbit

C．Kraemer will work with Chinese scientists in clone researches

D．about two thousand of species will probably die out in a century

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

The year 2006 was a busy one for space and technology workers. A planet lost its status and space flights caught the imagination of people around the world.
The following is a short list of the major events of the year:____________
IBM has built a chip that runs about 100 times faster than the ones we have now. The development could lead to faster computers. The chip was first made in June. It can run at a speed of 500 gigahertz (千兆赫).
Pluto loses face
The International Astronomical Union created the first scientific definition (定义) of the word "planet" in August. Under the new rules, Pluto is no longer called a planet but a "dwarf planet" (矮行星).
Pluto had been considered a planet since its discovery in 1930. For now, there are only the eight "classical" planets in the solar system (太阳系): They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
Woman space tourist
The first woman space tourist was launched on a Russian rocket from Kazakhstan on September 18. The flight carried a businesswoman, named Anousheh Ansari, along with a fresh crew for the International Space Station (ISS). Ansari is a 40-year-old American. She has paid at least US$20 million for the trip. She returned on September 28 after her eight-day stay at the International Space Station.
Discovery sent up
The US space shuttle Discovery took seven astronauts on a 12-day repair mission (任务) to the International Space Station on December 9. It was the first night launch by NASA in four years. The last one ended in the failure of the space shuttle Columbia in 2003.
小题1: The sub-title of the second paragraph probably would be _______.

A．IBM

B．The development of computers

C．The first chip born

D．Faster computer chip

小题2:The US space shuttle Discovery was sent up mainly to ________.

A．do some research

B．do some repairs

C．be in memory to Columbia shuttle.

D．build a space station.

小题3:Which of the following statements is WRONG?

A．Pluto is no longer a real planet according to the new theory.

B．People have been dreaming about space flight.

C．Anousheh Ansari was the first women space tourist.

D．The US space shuttle Discovery is the first one launched by NASA at night.

小题4:The passage is written mainly to tell us_______.

A．exciting new science of the year of 2006.

B．space flight full of wonders.

C．the major events of the year of 2006.

D．science and technology is the first productive.

查看答案和解析>>

科目：高中英语 来源：不详 题型：阅读理解

Electronic waste, or e-waste, refers to electronic products that are no longer usable. This can include TVs, cell phones and computers and other office electronics, electronic toys and videos machines. Today, the average turnover（更换）rate for a computer in the United States is every two years, according to the environmental group, Greenpeace.
The group's Dai Yun says e-waste is a global problem. "The electronic industry is one of the fastest growing industries in the world. The high speed of growth in this industry means more and more electronic products are being wasted and thrown away. If no one decides to retrieve the old products and process them properly, the electronic waste will sweep over the earth like the huge wave behind me and pollute the Earth seriously."
Greenpeace works out that 20 to 50 million tons of e-waste are produced globally each year. The components（部件）in many electronic products contain harmful chemicals that pollute ground water and the environment.
At present , the U.S. has no federal law for the disposal (处理) of e-waste although a few states have e-waste recycling programs in place, but there is no law. The U.S. exports much of its e-waste to third world countries, such as India and China, where workers took apart computers for valuable parts, hoping to sell them for money. But harmful wastes expert, Dr. Bakul Rao, says that's a dangerous practice. "From now on, the recyclers are not very educated. All they know is they can retrieve copper or gold out of it. So, the easiest way to do that is leach (过滤) it out in an acid or burn it off to retrieve it. So, that's where they don't know how to deal with it, neither do they have any health systems in place. So, their exposure is more."
小题1:Which of the following is most likely not to be a form of e-waste?

A．A mobile phone

B．A radio

C．An e-bike

D．A table

小题2:What does the underlined word "retrieve" (paragraph 2) probably mean?

A．look into

B．take apart

C．get back

D．throw away

小题3:What of the following statements is true according to the passage？

A．The U.S. has strict national laws for dealing with e-waste.

B．Third world countries import e-waste to get valuable parts, which is a safe and easy way to
make money.

C．The way uneducated workers deal with old computers does great harm to the environment as well as to their own health.

D．More and more electronic waste is being wasted and thrown away mainly because of

people's bad habits.
小题4:What is the purpose of writing the passage?

A．To attract more people's attention to e-waste.

B．To call on people not to throw away e-waste anywhere.

C．To tell people what e-waste is and how to deal with it well.

D．To warn people to break away from the electronic industry.

小题5: The next paragraph probably concerns_______.

A．how to deal with e-waste properly

B．how to protect ourselves from harm by e-waste

C．How to slow down the development in the electronic industry

D．how to make full use of e-waste

查看答案和解析>>

同步练习册答案

练习册

高中

初中

小学