Bend, a small town in Oregon, is called“moon country". Before the astronauts ever_______it to the moon, they trained in Bend. When jim Inwin came to Bend for_______， he made friends with Floyd Watson,a(n) _______resident,who was the building inspetor for the eity,.Five years later, Inwin was _______for the Apollo 15 moon landing---the first of three lunar missions that_______putting a ear on the moon and driving it around the rough _______

When the news that his old friend would go to the moon came to Waton's_______,he chose a piece of lava rock(火山岩) near Devil's Lake,_______it in paper. Then he posted it to Irwin with a letter where he _______him and made a request. "I am sending you a ________piece of Central Oregon lava, which I hope you will be able to________ to the moon for me," at the end of his letter he________Off went the letter, and Watson thought________of it. A few months later,on July 26，1971. Irwin________to the moon with David Scott and Alfred Worden. After landing, Irwin spent three days ________the surface of the moon together with Scott while Worden orbited________them.

Anda few weeks after their ________,Watson got an unexpected letter from Irwin. "I did carry your piece of lava to the moon and left it there," Irvin wrote---and enclosed(附上) a________of it, with the small piece of Oregon lava________with an arrow and the words “Oregon lava on the moon!" For Watson the letter and the picture were________And, of course, he never looked at the moon the same way again.