Exploring ________ space is exciting, yet dan...

Exploring ________ space is exciting, yet dangerous. There is _______need for both robots and humans for space exploration.

A．the; a            B．a; the             C．/; a              D．/; /

高二英语单项填空中等难度题查看答案及解析

Space is a dangerous place, not only because of meteors (流星 ) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable（可忍受的）. Various kinds of rays come through the air from outer space, but enormous quantities of radiation（辐射） from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage - a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will no be discovered until the birth of abnormal children or even grandchildren.

Missions of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

1. According to the first paragraph, the atmosphere is essential to man in that ____.

A. it protects him against the harmful rays from space

B. it provides sufficient light for plant growth

C. it supplies the heat necessary for human survival

D. it screens off the falling meteors

2. We know from the passage that ____.

A. exposure to even tiny amounts of radiation is deadly

B. the effect of exposure to radiation is slow in coming

C. radiation is avoidable in space exploration

D. astronauts in spacesuits needn't worry about radiation damage

3. The harm radiation has done to the Apollo crew members ____

A. is significant            B. seems overestimated

C. is enormous             D. remains unknown

4. It can be inferred from the passage that ____.

A. the Apollo mission was very successful

B. protection from space radiation is no easy job

C. astronauts will have deformed children or grandchildren

D. radiation is not a threat to well-protected space explorers

45. The best title for this passage would be ____.

A. The Atmosphere and Our Environment   B. Research on Radiation

C. Effects of Space Radiation             D. Importance of Protection Against Radiation

高二英语阅读理解简单题查看答案及解析

Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is necessary for plants to make the food that we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

Radiation is the greatest known danger to explorers in space, The unit of radiation is called “rem” Scientists have reason to think that a man can put up with far more radiation than 0.1rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage. A person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and , during the outward and return journeys, the Apollo crew accumulated(积累) a large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

1.In which way is the atmosphere necessary to man according to the first paragraph?

A. It screens off the falling meteors.

B. It provides enough light for plants to grow.

C. It supplies the heat necessary for human survival.

D. It protects him against the harmful rays from space.

2.We know from the passage that 　　　　　　 .

A. exposure to even tiny amount of radiation is fatal( 致命的)

B. the effect of exposure to radiation is slow in coming

C. radiation is avoidable in space exploration

D. astronauts in spacesuits needn’t worry about radiation damage

3.The underlined word “deformed” probably means 　　　　 .

A. badly-shaped　　 　　 B. weak

C. naturally-grown　　　 D. ugly

4.It can be inferred from the passage that 　　　　　　　　 .

A. the Apollo mission was very successful

B. astronauts will have deformed children or grandchildren

C. protection from space radiation is no easy job

D. radiation is not a threat to well-protected space explorers

高二英语阅读理解中等难度题查看答案及解析

As there is less and less coal and oil, scientists are exploring new ways of making use  of ______________   energy, such as sunlight, wind and water for power and fuel.

A．abrupt            B．alternative         C．authentic          D．abstract

高二英语单项填空中等难度题查看答案及解析

Why should mankind explore space? Why should money, time and effort be spent exploring and researching something with so few apparent benefits? Why should resources be spent on space rather than on conditions and people on Earth?These are questions that, understandably, are very often asked.

Perhaps the best answer lies in our genetic makeup as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.

Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects.

Exploration also allows minerals and other potential resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products of technological developments in the space, the chance to save ourselves might not exist.

While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.

While Earth is the only planet known to support life, surely the adaptive ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.

1.What is the reason for exploring space based on Paragraph2?

A. Humans are nature-born to do so.

B. Humans have the tendency to fight.

C. Humans may find new sources of food.

D. Humans don’t like to stay in the same place.

2.The underlined word“spin-offs” in Paragraph 4 probably refers to______.

A. survival chances 　　　 B. potential resources

C. unexpected benefits 　 D. physical possessions

3.What makes it possible for humans to live on other planets?

A. Our genetic makeup.

B. Resources on the earth..

C. The adaptive ability of humans.

D. By-products in space exploration.

4.Which of the statements can best sumun the passage?

A. Space exploration has created many wonders.

B. Space exploration provided the best value for money.

C. Space exploration can benefit science and technology.

D.Space exploration may help us avoid potential problems on Earth.

高二英语阅读理解中等难度题查看答案及解析

Why should mankind explore space? Why should money, time and effort be spent exploring and researching something with so few apparent benefits? Why should resources be spent on space rather than on conditions and people on Earth? These are questions that, understandably, are very often asked.

Perhaps the best answer lies in our genetic makeup as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible．

Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects.

Exploration also allows minerals and other potential resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products of technological developments in the space industry!

While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers．The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.

While Earth is the only planet known to support life, surely the adaptive ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.

1.Why does the author mention the questions in Paragraph1?

A. To express his doubts.

B. To compare different ideas.

C. To introduce points for discussion.

D. To describe the conditions on Earth.

2.What is the reason for exploring space based on Paragraph2?

A. Humans are nature-born to do so.

B. Humans have the tendency to fight.

C. Humans may find new sources of food.

D. Humans don't like to stay in the same place.

3.The underlined word "spin-offs" in Paragraph 4 probably refers to______.

A. survival chances　　　　　　 B. potential resources

C. unexpected benefits　　　　 D. physical possessions

4.What makes it possible for humans to live on other planets?

A. Our genetic makeup.

B. Resources on the earth.

C. The adaptive ability of humans.

D. By-products in space exploration.

高二英语阅读理解中等难度题查看答案及解析

The US space agency NASA is looking for people to go to Mars, and stay there. This attractive career is for people who want a huge change of scenery and planet. The project is called the Hundred Years Starship, which aims to colonize (开拓殖民地) other lands such as the red planet Mars.

Settlers would travel to the red planet and live there forever. NASA says it would be too expensive to bring humans back to Earth. The space agency can afford, however, to send supplies to the astronaut pioneers from Earth. Astronauts would be landed on the planet's surface and would never be able to return home due to the cost.

NASA has started the project with $1.6 million, and hopes to attract investment from space-living billionaires. Google co-founder Larry Page told NASA he would be interested if the cost of a one-way ticket can go down from $10 billion to $2 billion.

The journey to Mars could take 4 months. Setting on the red planet would be extremely dangerous, especially given the freezing temperatures there. The thin atmosphere would be another problem as it is mostly carbon dioxide, so oxygen supplies are a must. A director in NASA said that he believed the trip might start with visiting Mars's moons first. He claimed that humans could be on Mars's moons by 2030.

Many scientists think colonizing space is absolutely necessary. Steven Hawking believes we must move to other planets to survive as a species. He said: “Once we spread out into space and establish independent colonies, our future should be safe.” Scientists Dirk' Schulze-Makuch and Paul Davies also call it a “desirable goal”, though there surely are huge risks to explore new lands.

1.Which of the following is TRUE about the Hundred Years Starship?

A．It has cost NASA around $10 billion.

B．It is expected to be conducted on Mars in 2030.

C．It aims to explore new lands in the universe.

D．It is a project first raise by Steven Hawking.

2.We can infer from the passage that Google co-founder Larry Page _______.

A．used to be an astronaut                  B．is no longer rich now

C．is a fan of space travel                    D．is a generous man

3.What would be the best title for the passage?

A．One-way trip to Mars

B．Mars's another moon is found.

C．Human landing on Mars.

D．NASA's first cooperation with Google.

高二英语阅读理解中等难度题查看答案及解析

There is no doubt _____ China has made rapid progress in space exploration.

高二英语单项填空简单题查看答案及解析

---- Is everyone here?

----Not yet. Look, there _______ the rest of our guests.

A. come　　　　　　　 B. comes

C. is coming　　　 D. are coming

高二英语单项填空中等难度题查看答案及解析

--- Is everyone here ?

--- Not yet … Look, there ___ the rest of our guests !

A．come            B．comes            C．is coming          D．are coming

高二英语单项填空中等难度题查看答案及解析