单选题It is difficult to send people to other planets because of ______.A lack of capacity of space exploration vehicles.B the financial expenditure involved in space travel.C controversial nature of space travel.D the uncertain future of space exploration.

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第二篇
The Mir Space Station
The Russian Mir Space Station,which came down in 2001 at last after 15 years of pioneering the concept of long-term human space flight,is remembered for its accomplishments in the human space flight history.It can be credited with many firsts in space.
During Mir's lifetime,Russia spent about US $4.2 billion to build and maintain the station.
The Soviet Union launched Mir,which was designed to last from three to five years,on February 20, 1986,and housed 104 astronauts over 12 years and seven months,most of whom were not Russian.In fact, it became the first international space station by playing host to 162 people from 1 1 countries.From 1995 through 1998,seven astronauts from the United States took turns living on Mir for up to six months each.They were among the 37 Americans who visited the station during nine stopovers by space shuttles.
The more than 400 million the United States provided Russian for the visits not only kept Mir operating,but also gave the Americans and their partners in the international station project valuable experience in long-term flight and multinational operations.
A debate continues over Mir's contributions to science.During its existence,Mir was the laboratory for 23,000 experiments and carried scientific equipment,estimated to be worth $80 million,from many nations.Experiments on Mir are credited with a range of findings,from the first solid measurement of the ration of heavy helium（氦）atoms in space to how to grow wheat in space.But for those favouring human space exploration,Mir showed that people could live and work in space long enough for a trip to Mars.The longest single stay in space is the 437.7 days that Russian astronaut Valery Polyakov spent on Mir from 1994 to 1995.And Sergie Avdeyev accumulated 747.6 days in space in three trips to the space station.The longest American stay was that of Shannon Lucid,who spent 188 days aboard Mir in 1996.
Despite the many firsts Mir accomplished,1997 was a bad year out of 15 for Mir.In 1997,an oxygen generator caught fire.Later,the main computer system broke down,causing the station to drift several times and there were power failures.Most of these problems were repaired,with American help and suppliers,but Mir's reputation as a space station was ruined.
Mir's setbacks are nothing,though,when we compare them with its accomplishments.Mir was a tremendous success,which will be remembered as a milestone in space exploration and the space station that showed long-term human habitation in space was possible.But it's time to move on to the next generation.The International Space Station being built will be better,but it owes a great debt to Mir.

It can be inferred from the last paragraph that______.
A:space exploration will not experience setbacks
B:it is difficult for other space stations to exceed Mir's success
C:Mir is the best long-term human habitation in space in history
D:multinational space operations are getting more accomplishments

共用题干
The Race Into Space

American millionaire Dennis Tito will always be famous.He was the first tourist in space."I spent sixty
years on Earth and eight days in space and from my viewpoint,it was two separate lives,"Tito explained.He
loxed his time in space."Being in space and looking back at the earth is one of the most rewarding experi-
ences a human being can have."
This kind of experience isn't cheap.It cost$20 million.However,Tito achieved his dream,so he was
happy."For me it was a life dream.It was a dream that began when I didn't have any money,"he
told reporters.
On 24th,April 2002,Mark Shuttleworth became the world's second space tourist.Shuttleworth is a South
African businessman.At the age of twenty-eight,he also paid $20 million for the eight-day trip.
Both Tito and Shuttleworth bought their tickets from a company called Space Adventures.The company
has around 100 people already on their waiting list for flights into space.The spaceship to take them doesn't
exist yet.
Many of the customers are people who like adventure.They are the kind of people who also want to
climb Mount Qomolangma.Other customers are people who love space.However,these people are worried.
Because it's so expensive,only very rich people can go into space.They want space travel to be available to
more people.

That day may soon be here.InterOrbital Systems(IOS)plans to send up to four tourists a week into
space.The tours will depart from an island in Tonga.The company promises a package that includes forty-five
days of astronaut training in Russia and California,seven days in space and a vacation in Tonga,for $2 million.
However,space flight is still very dangerous.Bill Readdy is NASA's deputy assistant administrator for
space flight.He says that the chances of dying are about 1 in 500.Because of this,it may take time before
space tourism really takes off.You might be able to go up,but will you come down?

Space Adventures already has a spaceship.
A:Right
B:Wrong
C:Not mentioned

共用题干
第三篇

Human Space Exploration

While scientists are searching the cause of the Columbia disaster,NASA is moving
ahead with plans to develop a new craft that would replace shuttles（航天飞机）on space
station missions by 2012 and respond quickly to space station emergencies.
The space agency released the first set of mission needs and requirements several days
ago for the orbital space plane（轨道航天飞机）,which would be designed to transport a
crew of four to and from the International Space Station.
Although it includes few specifics, the plan states the orbiter（轨道航天飞机）will be
safer,cheaper and require less preparation time than the shuttle.It would be able to
transport four crew members by 2012一though it would be available for rescue missions by
2010.NASA says the craft should be able to transport injured or ill space station crew
members to "definitive（决定性的）medical care" within 24 hours.
The release of the requirements showed NASA remains focused on the long-term
priorities of space exploration,even as questions exist concerning the loss of Columbia and
its seven-member crew on February 1,2003.
Experts at Marshall Space Flight Center in Huntsville,Alabama,have been working for
years on a successor to the shuttle.The project,known as the Space Launch Initiative（倡
议）,was divided last year into two parts一one focusing on a future launch vehicle,the
other on a space station orbiter. The orbiter is expected to be ready sooner.
The program's managers say NASA officials have told them not to alter Space
Launch Initiative in light of the Columbia disaster.
U.S. President George W. Bush asked Congress for about U.S.$1 billion for Space
Launch Initiative in 2004,funds that would be almost equally split between the Orbital Space
Plane and Next Generation Launch Technology.

According to the passage,the 1 billion funds,if granted,would
A:be used to rebuild the International Space Station.
B:be awarded to the scientists working at NASA.
C:be shared by the two projects under the Space Launch Initiative.
D:be spent on the investigation of the Columbia disaster.

共用题干
The Race Into Space

American millionaire Dennis Tito will always be famous.He was the first tourist in space."I spent sixty
years on Earth and eight days in space and from my viewpoint,it was two separate lives,"Tito explained.He
loxed his time in space."Being in space and looking back at the earth is one of the most rewarding experi-
ences a human being can have."
This kind of experience isn't cheap.It cost$20 million.However,Tito achieved his dream,so he was
happy."For me it was a life dream.It was a dream that began when I didn't have any money,"he
told reporters.
On 24th,April 2002,Mark Shuttleworth became the world's second space tourist.Shuttleworth is a South
African businessman.At the age of twenty-eight,he also paid $20 million for the eight-day trip.
Both Tito and Shuttleworth bought their tickets from a company called Space Adventures.The company
has around 100 people already on their waiting list for flights into space.The spaceship to take them doesn't
exist yet.
Many of the customers are people who like adventure.They are the kind of people who also want to
climb Mount Qomolangma.Other customers are people who love space.However,these people are worried.
Because it's so expensive,only very rich people can go into space.They want space travel to be available to
more people.

That day may soon be here.InterOrbital Systems(IOS)plans to send up to four tourists a week into
space.The tours will depart from an island in Tonga.The company promises a package that includes forty-five
days of astronaut training in Russia and California,seven days in space and a vacation in Tonga,for $2 million.
However,space flight is still very dangerous.Bill Readdy is NASA's deputy assistant administrator for
space flight.He says that the chances of dying are about 1 in 500.Because of this,it may take time before
space tourism really takes off.You might be able to go up,but will you come down?

Space Adventures has about 100 customers waiting for their travel into space.
A:Right
B:Wrong
C:Not mentioned

共用题干
第二篇
The Mir Space Station
The Russian Mir Space Station,which came down in 2001 at last after 15 years of pioneering the concept of long-term human space flight,is remembered for its accomplishments in the human space flight history.It can be credited with many firsts in space.
During Mir's lifetime,Russia spent about US $4.2 billion to build and maintain the station.
The Soviet Union launched Mir,which was designed to last from three to five years,on February 20, 1986,and housed 104 astronauts over 12 years and seven months,most of whom were not Russian.In fact, it became the first international space station by playing host to 162 people from 1 1 countries.From 1995 through 1998,seven astronauts from the United States took turns living on Mir for up to six months each.They were among the 37 Americans who visited the station during nine stopovers by space shuttles.
The more than 400 million the United States provided Russian for the visits not only kept Mir operating,but also gave the Americans and their partners in the international station project valuable experience in long-term flight and multinational operations.
A debate continues over Mir's contributions to science.During its existence,Mir was the laboratory for 23,000 experiments and carried scientific equipment,estimated to be worth $80 million,from many nations.Experiments on Mir are credited with a range of findings,from the first solid measurement of the ration of heavy helium（氦）atoms in space to how to grow wheat in space.But for those favouring human space exploration,Mir showed that people could live and work in space long enough for a trip to Mars.The longest single stay in space is the 437.7 days that Russian astronaut Valery Polyakov spent on Mir from 1994 to 1995.And Sergie Avdeyev accumulated 747.6 days in space in three trips to the space station.The longest American stay was that of Shannon Lucid,who spent 188 days aboard Mir in 1996.
Despite the many firsts Mir accomplished,1997 was a bad year out of 15 for Mir.In 1997,an oxygen generator caught fire.Later,the main computer system broke down,causing the station to drift several times and there were power failures.Most of these problems were repaired,with American help and suppliers,but Mir's reputation as a space station was ruined.
Mir's setbacks are nothing,though,when we compare them with its accomplishments.Mir was a tremendous success,which will be remembered as a milestone in space exploration and the space station that showed long-term human habitation in space was possible.But it's time to move on to the next generation.The International Space Station being built will be better,but it owes a great debt to Mir.

We can learn from the passage that the Mir Space Station______.
A:was designed to last over 5 years
B:played host to 7 astronauts from different countries
C:was visited only by Americans
D:was built by Russians

共用题干
The Race Into Space

American millionaire Dennis Tito will always be famous.He was the first tourist in space."I spent sixty
years on Earth and eight days in space and from my viewpoint,it was two separate lives,"Tito explained.He
loxed his time in space."Being in space and looking back at the earth is one of the most rewarding experi-
ences a human being can have."
This kind of experience isn't cheap.It cost$20 million.However,Tito achieved his dream,so he was
happy."For me it was a life dream.It was a dream that began when I didn't have any money,"he
told reporters.
On 24th,April 2002,Mark Shuttleworth became the world's second space tourist.Shuttleworth is a South
African businessman.At the age of twenty-eight,he also paid $20 million for the eight-day trip.
Both Tito and Shuttleworth bought their tickets from a company called Space Adventures.The company
has around 100 people already on their waiting list for flights into space.The spaceship to take them doesn't
exist yet.
Many of the customers are people who like adventure.They are the kind of people who also want to
climb Mount Qomolangma.Other customers are people who love space.However,these people are worried.
Because it's so expensive,only very rich people can go into space.They want space travel to be available to
more people.

That day may soon be here.InterOrbital Systems(IOS)plans to send up to four tourists a week into
space.The tours will depart from an island in Tonga.The company promises a package that includes forty-five
days of astronaut training in Russia and California,seven days in space and a vacation in Tonga,for $2 million.
However,space flight is still very dangerous.Bill Readdy is NASA's deputy assistant administrator for
space flight.He says that the chances of dying are about 1 in 500.Because of this,it may take time before
space tourism really takes off.You might be able to go up,but will you come down?

Mark Shuttleworth is an engineer from the United States.
A:Right
B:Wrong
C:Not mentioned

共用题干
The Race Into Space

American millionaire Dennis Tito will always be famous.He was the first tourist in space."I spent sixty
years on Earth and eight days in space and from my viewpoint,it was two separate lives,"Tito explained.He
loxed his time in space."Being in space and looking back at the earth is one of the most rewarding experi-
ences a human being can have."
This kind of experience isn't cheap.It cost$20 million.However,Tito achieved his dream,so he was
happy."For me it was a life dream.It was a dream that began when I didn't have any money,"he
told reporters.
On 24th,April 2002,Mark Shuttleworth became the world's second space tourist.Shuttleworth is a South
African businessman.At the age of twenty-eight,he also paid $20 million for the eight-day trip.
Both Tito and Shuttleworth bought their tickets from a company called Space Adventures.The company
has around 100 people already on their waiting list for flights into space.The spaceship to take them doesn't
exist yet.
Many of the customers are people who like adventure.They are the kind of people who also want to
climb Mount Qomolangma.Other customers are people who love space.However,these people are worried.
Because it's so expensive,only very rich people can go into space.They want space travel to be available to
more people.

That day may soon be here.InterOrbital Systems(IOS)plans to send up to four tourists a week into
space.The tours will depart from an island in Tonga.The company promises a package that includes forty-five
days of astronaut training in Russia and California,seven days in space and a vacation in Tonga,for $2 million.
However,space flight is still very dangerous.Bill Readdy is NASA's deputy assistant administrator for
space flight.He says that the chances of dying are about 1 in 500.Because of this,it may take time before
space tourism really takes off.You might be able to go up,but will you come down?

IOS will send its tourists into space from Tonga.
A:Right
B:Wrong
C:Not mentioned

共用题干
第三篇

Human Space Exploration

While scientists are searching the cause of the Columbia disaster,NASA is moving
ahead with plans to develop a new craft that would replace shuttles（航天飞机）on space
station missions by 2012 and respond quickly to space station emergencies.
The space agency released the first set of mission needs and requirements several days
ago for the orbital space plane（轨道航天飞机）,which would be designed to transport a
crew of four to and from the International Space Station.
Although it includes few specifics, the plan states the orbiter（轨道航天飞机）will be
safer,cheaper and require less preparation time than the shuttle.It would be able to
transport four crew members by 2012一though it would be available for rescue missions by
2010.NASA says the craft should be able to transport injured or ill space station crew
members to "definitive（决定性的）medical care" within 24 hours.
The release of the requirements showed NASA remains focused on the long-term
priorities of space exploration,even as questions exist concerning the loss of Columbia and
its seven-member crew on February 1,2003.
Experts at Marshall Space Flight Center in Huntsville,Alabama,have been working for
years on a successor to the shuttle.The project,known as the Space Launch Initiative（倡
议）,was divided last year into two parts一one focusing on a future launch vehicle,the
other on a space station orbiter. The orbiter is expected to be ready sooner.
The program's managers say NASA officials have told them not to alter Space
Launch Initiative in light of the Columbia disaster.
U.S. President George W. Bush asked Congress for about U.S.$1 billion for Space
Launch Initiative in 2004,funds that would be almost equally split between the Orbital Space
Plane and Next Generation Launch Technology.

NASA plans to design the new space craft to
A:control the International Space Station.
B:carry astronauts to the International Space Station.
C:transport equipment to the International Space Station.
D:train astronauts in space flights.