更多"Doctors are to begin a trial of a d"的相关试题:
[单项选择]Doctors are to begin a trial of a drug treatment that could double the time transplanted organs survive in the body. The 20-minute procedure effectively coats donor organs in a protective shield that stops them being rejected by the patient’s immune system.
The treatment is expected to prolong the time that organs remain healthy in patients’ bodies and also increase their shelf-life (保存期限), so they can be stored for longer or transported further before being used. If the treatment works, it could ease the burden on organ transplant services, which face an increasing gap between the supply and demand for donor organs.
People who receive transplants must take drugs to suppress their immune systems, but the body still reacts enough to cause transplants to fail sooner than they should. A healthy transplanted kidney lasts on average only 10 years, around one third of the time it should last. Organs such as hearts and livers fail even sooner. The consequence is that patients who ha
A. To make a big profit from the new drug.
B. To reduce the risk of operations.
C. To prolong the shelf-life of organs.
D. To help patients save money.
[单项选择]This line of inquiry did not begin until earlier this month--more titan three months after the accident--because there were "too many emotions, too many egos," said retired Adm, Harold Gehman, chairman of the Columbia Accident Investigation Board.
Testifying before the Senate Commerce Committee, Gehman said this part of his inquiry was in its earliest stages, starting just 10 days ago. But Gehman said he already has concluded it is "inconceivable" that NASA would have been unable or unwilling to attempt a rescue for astronauts in orbit if senior shuttle managers and administrators had known there was fatal damage to Columbia’s left wing.
Gehman told reporters after the hearing that answers to these important questions could have enormous impact, since they could place in a different context NASA’s decisions against more aggressively checking possible wing damage in the days before Columbia’s fatal return.
Investigators believe breakaway insulating foam damaged par
A. Gehman’s Comments on Columbia Accident
B. An Inquiry Into Columbia Accident
C. Shedding Light on Shuttle’s Safety
D. NASA’s Problems Being
