A. about the first men to walk in the moon
B. how men found footprints on the moon
C. what the men brought back from their trip to the moon
D. who had left footprints on the moon before the two men landed there.
A. make balls of light seem brighter
B. turns the moon into another world
C. makes many of men’s dreams come true
D. makes faraway things seem closer
A. they wanted something to show they were there
B. people wanted to use them to learn about the moon
C. they wanted to keep them as souvenirs
D. they might sell them to the scientists
A. someone takes them away
B. a storm covers them with dust
C. rain and wind destroy them
D. they become rusty and break to pieces
A. find that the machines have disappeared
B. leave the first set of footprints on the moon
C. find the places where Armstrong and Aldrin walked
D. find that dust has wiped off the two men’s footprints
A. observe
B. explain
C. calculate
D. require
A. UFO means Unidentified Flying Object.
B. UFO is often used to talk about alien spaceships.
C. Many UFO sightings are hoaxes.
D. Over half of all reported UFO sightings are identified.
A. At
B. in
C. To
A. There
B. They
C. That
A. to climb
B. climb
C. climbing
A. see
B. saw
C. seen
A. throw
B. threw
C. thrown
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