5. Astronauts are always in space suits because exposing human beings to the cold, airless environment of space is _____.
(A) illegitimate
(B) lethal (C ) sustainable
(D) gravitational
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Astronauts are alway...
私人筆記 (共 1 筆)
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illegitimate 不合法的，私生...
阿摩線上測驗
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