托福閱讀會涉及到各種性質的段子，其中學術類的段子比較多一些，考生在進行托福閱讀練習時，也應該選一些類似的段子來模擬練習。下面為您提供托福閱讀材料“國際空間站冷卻系統(tǒng)故障”供大家閱讀，希望對大家有所幫助。
The crew of the International Space Station have been forced to reduce power after half the cooling system suddenly shut down over the weekend.
Nasa officials insisted the three Americans and three Russians aboard were not in danger.
Urgent spacewalk repairs are being discussed for this week.
Without thermal controls， temperatures on the ISS‘s Sun-facing side can soar to 121C (250F)， plunging to minus 157C (-250F) on the dark side， Nasa says.
“There might be a comfortable spot somewhere in the middle of the station， but searching for it wouldn’t be much fun，” a statement on its website adds.
The station is now operating on a single string， the Associated Press reports， and has no safeguard in case of further cooling system failures.
Alarms sound
Trouble arose on Saturday night when one of the two ammonia-fed cooling loops shut down， triggering alarms throughout the ISS
The two ammonia lines ensure that all the station‘s electronic equipment does not overheat.
Astronaut Tracy Caldwell Dyson set in motion equipment shutdown procedures and， with crewmate Douglas Wheelock， installed a jumper cable to keep all the rooms cool.
The Global Positioning System circuit， several power converters and a set of devices that route commands to various pieces of equipment were switched off.
Two of the four gyroscopes - part of the space station’s pointing and navigating system - were initially shut down but the crew installed a jumper cable to bring up a third gyroscope， leaving the station in a much more stable position， AP says.
Flight controllers tried to restart the disabled ammonia pump early on Sunday but the circuit breaker tripped again.
Any repairs later this week almost certainly will involve replacing the faulty ammonia pump， a difficult job that would require two spacewalks， AP adds.
“It‘s pretty clear that we’re going to want to have a course of action to take as quickly as possible，” Nasa spokesman Rob Navias said at the Johnson Space Center in Houston， Texas.
“This is not something we want to linger over.”
Two spare pumps are stored on the outside of the station. Two of the Americans on board are already scheduled to conduct a spacewalk on Thursday for routine maintenance.
No space shuttle visits to the ISS are planned before November.
以上就是托福閱讀材料《國際空間站冷卻系統(tǒng)故障》，同學們可以積累其中的詞匯及優(yōu)美句式，找到托福閱讀段的主題句，了解托福閱讀的幾個出題點。托福閱讀訓練是個長期的過程。大家如果每天做幾篇閱讀，堅持下來，一定會有不小的進步。
The crew of the International Space Station have been forced to reduce power after half the cooling system suddenly shut down over the weekend.
Nasa officials insisted the three Americans and three Russians aboard were not in danger.
Urgent spacewalk repairs are being discussed for this week.
Without thermal controls， temperatures on the ISS‘s Sun-facing side can soar to 121C (250F)， plunging to minus 157C (-250F) on the dark side， Nasa says.
“There might be a comfortable spot somewhere in the middle of the station， but searching for it wouldn’t be much fun，” a statement on its website adds.
The station is now operating on a single string， the Associated Press reports， and has no safeguard in case of further cooling system failures.
Alarms sound
Trouble arose on Saturday night when one of the two ammonia-fed cooling loops shut down， triggering alarms throughout the ISS
The two ammonia lines ensure that all the station‘s electronic equipment does not overheat.
Astronaut Tracy Caldwell Dyson set in motion equipment shutdown procedures and， with crewmate Douglas Wheelock， installed a jumper cable to keep all the rooms cool.
The Global Positioning System circuit， several power converters and a set of devices that route commands to various pieces of equipment were switched off.
Two of the four gyroscopes - part of the space station’s pointing and navigating system - were initially shut down but the crew installed a jumper cable to bring up a third gyroscope， leaving the station in a much more stable position， AP says.
Flight controllers tried to restart the disabled ammonia pump early on Sunday but the circuit breaker tripped again.
Any repairs later this week almost certainly will involve replacing the faulty ammonia pump， a difficult job that would require two spacewalks， AP adds.
“It‘s pretty clear that we’re going to want to have a course of action to take as quickly as possible，” Nasa spokesman Rob Navias said at the Johnson Space Center in Houston， Texas.
“This is not something we want to linger over.”
Two spare pumps are stored on the outside of the station. Two of the Americans on board are already scheduled to conduct a spacewalk on Thursday for routine maintenance.
No space shuttle visits to the ISS are planned before November.
以上就是托福閱讀材料《國際空間站冷卻系統(tǒng)故障》，同學們可以積累其中的詞匯及優(yōu)美句式，找到托福閱讀段的主題句，了解托福閱讀的幾個出題點。托福閱讀訓練是個長期的過程。大家如果每天做幾篇閱讀，堅持下來，一定會有不小的進步。