摘要：21．Man walked the moon for the first time July 20.1969．A．in.on B．on.on C．on.in D．at.at
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—Do you know Neil Armstrong?
—Yes. He is the first man on the moon.
A. to walk B. walks C. walked
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---- Do you know Neil Armstrong?
---- Yes, he is the first man ___ on the moon..
A. walk B. walks C. to walk D. walked
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| People _1_ at the moon and written poems about it for thousands of years, but nobody expected to go _2 1961 when Yuri Gagarin made the first manned space flight. Then the Americans decided to send a man to the moon . Apollo 11 took off _3_ 16 July , 1969. The moon is 238,900 miles from Earth and the journey _4 _ four days . On 21 July, Neil Armstrong 5_ the first man to walk on the moon. The astronaut in the pictures of the first moon landing isn't Neil Armstrong. The photos show the second man to walk on the moon , Buzz Aldrin. That's _6 Armstrong took the photos ! There were six manned missions to the moon between 1969 and 1972 , and 12 people _7_ on the moon . No astronauts have been to the moon _8_ 1972. We've learnt a lot about the moon because of these missions. For Example, we know that there's no life there. _9_ has ever lived on the moon, but some scientists think that people will live on the moon one day . Life on the moon 10 easy. It will be a difficult and dangerous place to live.
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