“Deteriorating vision could seriously damage astronauts’ ability to carry out routine mission tasks,including monitoring displays and navigating the rocky landscape of Mars,”says Kring.“This possibility,combined with what we already know about how microgravity affects muscles and bones,paints a dark future for human space flight unless we start to develop effective measures.”
Kramer says that NASA has the matter in hand.In the wake of the study,all astronauts now have regular brain scans.This includes those yet to travel into space,providing a baseline(基线)from which any changes would be obvious.He also believes it might be possible to identify astronauts’ risk of eyesight damage from medical data before sending them into space.
研究发现,太空飞行会对宇航员的眼睛造成伤害,这或许会影响人类对太空的探测。
5.The author mentions idiopathic intracranial hypertension in Paragraph 3 in order to______.
A.show that the condition is common for astronauts
B.explain the symptoms of astronauts’ vision problems properly
C.stress the importance of astronauts’ vision problems
D.compare the difference between patients and astronauts
解析:作者意图题。根据第三段...a rare condition in which the pressure of blood is abnormally high in the brain可推断,作者的主要目的是更好地描述宇航员的症状,故答案为B项。
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