下列短文中有十个空白，每个空白有四个选项。根据上下文要求选出最佳答案。

Have you ever seen the man in the moonIf you look (11) at the moon on some nights. you can see the face of the man in the moon. Some people say that they can see an old man 12 sticks. Others say a girl reading. These pictures are made by the mountains and plains of the moon. Long ago people in England used to tell their children that the moon was (13) green cheese. Everyone knows that this is not true. The moon is a large round rock. It is completely (14) . There are no trees and plants of any kind on the moon. There are no rivers and seas. There are no living things. It never rains on the moon，and everything is covered with (15) . white dust. Not even a (16) can be heard on the moon. Where the sun (17) on it，the moon is very hot. In the dark，however, it is cold 18 ice. The moon is much smaller than the earth. It does not weigh as (19) as the earth. If you (20) to the moon，you would weigh six times less than you do. Even a fat man would be able to jump high off the ground.