填空题 Fill in each blank in no more than three words to complete the sentences according to the passage.

填空题 China' s lunar exploration programme consists of three stages; Chang' e-2and Chang' e-3 are part of the 1 phase, which is also the " 2" phase.

填空题 1 will be launched between 2010 to make preparations for the construction of China' s first space station, which it aims to be in operation by the year 2.