国有企业监事会对企业财产进行监督管理的原则。

backup oxygen sources.

A．America's

B．Britain's

C．Russia's

D．Japan's

primary and backup oxygen sources. If the problem is not fixed, the 3 - member crew would have to abort the mission. But, a Russian space official in Moscow told Ruters News Agency that only the primary generator developed trouble and that the unit was repaired by the crew. More about the latest problem on board the space station from VOA’s Nick Simming.

"The U. S. Space Agency says Mir’s two primary sources of oxygen have stopped working and now there is on ly several days’supply of oxygen inside Mir’s cabin. Mir’s backup oxygen generating candles failed Monday just after the normal oxygen supply system used by the spacecraft un expectedly shut down. That normal oxygen source, a method that extracts oxygen from water, had been turned off for several days to conserve energy while Mir’s crew performed re pairs. But when the system was activated Monday, it overheated and automatically shut down. NASA’s problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loses, computer mal function and even a collision with a supply vessel all in the past six months. Nick Simming VOA News, Washington."

The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.

A．America’s

B．Britain’s

C．Russia’s

D．Japan’s

s primary and backup oxygen sources. If the problem is not fixed, the 3 - member crew would have to abort the mission. But, a Russian space official in Moscow told Ruters News Agency that only the primary generator developed trouble and that the unit was repaired by the crow. More about the latest problem on heard the space station from VOA 's Nick Simming.

"The U. S. Space Agency says Mir's two primary sources of oxygen have stopped working and now there is only several days'supply of oxygen inside Mir's cabin. Mir's backup oxygen generating candles failed Monday just after the normal oxygen supply system used by the spacecraft un- expectedly shut down. That normal oxygen source, a method that extracts oxygen from water, had been turned off for several days to conserve energy while Mir's crew performed re- pairs. But when the system was activated Monday, it overheated and automatically shut down. NASA's problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loses, computer mal- function and even a collision with a supply vessel all in the past six months. Nick Simming VOA News, Washington."

The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.

A．America's

B．Britain's

C．Russia's

D．Japan's

NASA's Constellation Programme would be cancelled mainly because______

A．there were more important space missions

B．the space agency lacked funding for the programme

C．the current shuttle missions would continue

D．Congress failed to pass President Obama's budget

NASA's Constellation Programme would be cancelled mainly because______

A．there were more important space missions

B．the space agency lacked funding for the programme

C．the current shuttle missions would continue

D．Congress failed to pass President Obama's budget

primary and backup oxygen sources. If the problem is not fixed, the 3-member crew would have to abort the mission. But, a Russian space official in Moscow told Reuters News Agency that only the primary generator developed trouble and that the unit was repaired by the crew. Mom about the latest problem on board the space station from VOA's Nick Straining.

"The U.S. Space Agency says Mir's two primary sources of oxygen have stopped working and now there is only several, day's supply of oxygen inside Mir's cabin. Mir's backup oxygen generating candies failed Monday just after the normal oxygen supply system used by the spacecraft unexpectedly shut down. That normal oxygen source, a method that extracts oxygen from water, had been turned off for several days to conserve energy heated and automatically shut down. NASA's spokesman Michael Brock Hais says if Mir's oxygen supply problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loss, computer malfunction and even a collision with a supply vessel all in the past six months. Nick Straining VOA News, Washington."

What is the problem with Russia's space station？

A．It has lost its primary 6xygen sources.

B．It has lost its backup oxygen sources.

C．It has lost both the primary and the backup oxygen sources.

D．It has last neither the primary or the backup oxygen sources.

听力原文： Technicians are making the last-minute preparations for the launch of the U. S. space shuttle Discovery on a flight to the International Space Station. Flight officials with the space agency NASA are aware of storm clouds near the Atlantic coast launch site in Florida, which could postpone the launch. This is the second shuttle flight since Columbia disintegrated on reentry three years ago, killing all seven astronauts on board. Since then NASA has spent hundreds of millions of dollars to correct design flaw that caused a piece of foam insulation to break off from the fuel tank and puncture Columbia's wing. NASA is launching Discovery despite objections by the space agency's chief safety officer and chief engineer. They say the problems with the foam insulation have still not been resolved. Shuttle astronaut Steve Robinson says he is not worried. "The thing like this happened to every single flight and what's really great -- you remember how much we talked about culture change after Columbia. This is culture change. You are seeing it."

The space agency's chief safety officer ______ NASA's plan to launch Discovery.

A．vetoed

B．sanctioned

C．supported

D．disapproved

en, the other students are young people. Why do all these people want to learn __21__? It is not easy to answer this question. Many boys and girls learn English at school. It is one of their subjects. Many people learn English because it is __22__ in their work. Some young people learn English for their higher studies because some of their books are written __23__ English. Other people learn English because they want to __24__ newspapers in English. Some people learn English because they want to work in the USA, England or Australia. English is very __25__ in our life.

21)、

A.useful

B.in

C.read

D.helpful

E.English

22)、

A.useful

B.in

C.read

D.helpful

E.English

23)、

A.useful

B.in

C.read

D.helpful

E.English

24)、

A.useful

B.in

C.read

D.helpful

E.English

25)、

A.useful

B.in

C.read

D.helpful

E.English