China sent up Shenzhou Ⅸ manned spaceship into space successfully, which shows science and technology ______ rapidly in China.
A.have been developing | B.have developed |
C.has been developed | D.is developing |
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China sent up Shenzhou Ⅸ manned spaceship into space successfully, which shows science and technology ______ rapidly in China.
A.have been developing | B.have developed |
C.has been developed | D.is developing |