The Americans were getting ready to send their first man to the moon, an old Irishman (爱尔兰人) was 1 them on TV in a hotel room. There was an Englishman in the room, 2. And he said to the Irishman, "The Americans are very 3, aren't they? They are going to 4 some men to the moon. It's a very long way from our world." "Oh, that's 5,"the Irishman answered quickly." "The Irishman are going to send some men to the sun in months' 6. That's much 7 away than the moon, you know. "The Englishman was very 8 when he heard this. "Oh, yes it is," he said, "But the sun is too 9 for people to visit."

    The Irishman laughed and answered, "Well, the Irish are clever, too, you know. We 10 go to the sun during the day, of course. We'll go there during the night."

若把蜡烛从A点向B点移动，烛焰所成像的大小将____ （选填“变大”、“变小”或“不变”），若蜡烛移到C点，无论怎样移动光屏，在光屏上始终找不到像，原因是　____ ．

小明的体重38千克，小红比小明重a千克，小红的体重是____千克．