What will be the astronauts' top priorities（）
A: Entering the orbit and landing on the moon.
B: Landing and walking on the moon surface.
C: Exploration and researches into the moon composition.
D: Exploration and construction of a moon base.
A: Entering the orbit and landing on the moon.
B: Landing and walking on the moon surface.
C: Exploration and researches into the moon composition.
D: Exploration and construction of a moon base.
举一反三
- The moon landing ______ the beginning of a new era.
- Was it in 1969 ____, the American astronaut succeeded in landing on the moon?
- Was it in 1969 _____ the American astronaut succeeded _____ landing on the moon ?
- Was it is 1969（）the American astronaut succeeded（）landing on the moon A: when, on B: that, on C: where, in D: that, in
- Was it in 1969 ______ the American astronaut succeeded ______ landing on the moon A: when; on B: that; on C: which; in D: that; in