44. According to the passage, which of the following statements is incorrect?
(A) The long-term exposure to low-gravity environment might have adverse effects on the body.
(B) There has been dramatic breakthrough in technologies that operate in space travel since 1969.
(C) A spacesuit is a specially designed garment to keep human alive by keeping a body in a liquid state.
(D) After spending months or years in space during long-term space missions, return to Earth can be challenging to astronauts.

(A) The long-term exposure to low-gravity environment might have adverse effects on the body.

This looks like a lot of fun, but prolonged exposure to a microgravity environment can have insidious effects on the human body.  (第六段最後一句)    adverse effects = insidious effects = 副作用

(B) There has been dramatic breakthrough in technologies that operate in space travel since 1969.
But our space travel ambitions seem to have stalled since the 1970s and 1980s. (第一段第三句)   
(C) A spacesuit is a specially designed garment to keep human alive by keeping a body in a liquid state.

They also provide air pressure to prevent our bodily fluids from boiling in the hard vacuum of space.(第五段第三句)    bodily fluids 體液
(D) After spending months or years in space during long-term space missions, return to Earth can be challenging to astronauts.

Space travel plays havoc with our blood circulation.(第七段第一句)  

Muscles are also threatened by space travel.(第八段第一句)  

Over the long term, astronauts suffer the devastating consequences of bone loss. (第九段第一句)   

太空人的三種職業傷害  

解鎖囉

第一段 In July 1969, the world watched as two men set foot on the Moon. For the first time, humanity had ventured out of the planet and touched the possibility of worlds beyond. But our space travel ambitions seem to have stalled since the 1970s and 1980s.

所以B operate in space travel since 1969 錯了