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(1分)The astronauts took moon rocks back to the Earth for further research. (改为被动语态) Moon rocks    ...

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that    when    which    in which  
It will base its design on that of the Apollo program.  It will use parts only from the Apollo program.  It will make use of the Apollo program and the space shuttle.  It will develop new designs and make new components.  
People will land and remain on the moon.  Equipment will be carded and installed there.  More CEVs will be made regularly.  A special device will be used in landin  
that    when    on which    which  
measure    attempt    purpose    desire  
that    when    on which    which  
Entering the orbit and landing on the moon.  Landing and walking on the moon surface.  Exploration and researches into the moon composition.  Exploration and construction of a moon bas  
that    when    on which    which  
while  before  since  until  
ensure the moon traveling and the moon base construction  speed up the moon base construction and other activities  guarantee the quality of the researchers’ scientific study  set up new training laboratories for future missions to Mars  
They will be launched separately.  CEV will dock with the moon lander.  They will be launched together.  The moon lander will hold four astronauts.  

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