27. What is not one of the "firsts" accomplished by the Apollo 8 mission?
(A) Carrying astronauts outside the earth's orbit.
(B) Taking pictures of the earth from space.
(C) Returning to earth safe in the end.
(D) Landing astronauts on the moon.

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統計: A(2), B(11), C(4), D(13), E(0) #3863679

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題目:What is not one ...
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