Ex1 complete the sentences whit the words or pharses in the box
1 A______is sometimes referred to as an unidentified flying object(UFO)
2 An_______is a person who is trained for travelling in a space craft
3 Resear chết made the amazing finding of______water on Mars
4 A______is a vehicle used for driving on the moon
5 Our___is made up of the sun and all the objects that travel around it
6 Earth is the only known to he habitable to _____life
7 Do you believe______exist on other planets?
8 Space craft are vehicles used for travel in____
9our____the Milhy way,consists of 100-400 billion stars
10 Astronauts on the orbiting space stiom are ____because they do not experience a force of gravity
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Sinh Học lớp 12
