1 . 阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
No one knows what would happen in the future for sure.     1    we often think of the future and wonder what the world would be like     2    a hundred years’ time.
Think of space. By that time perhaps    3    permanent station on the moon will have been set up. Perhaps people     4    (be) able to visit the moon as tourists. Cheap rockets for space travel will have been developed,     5    (permit) long journeys throughout the solar system. When that time comes, people will be taking holidays in space and visiting other planets, such     6    the Mars Colony and the Venus Exploration outpost.
Scientists of the future will almost certainly find other ways to make life last    7    (long). They will    8    (probable) find cures for most diseases. Hospitals will may have “body banks”     9    can give you almost any new part you need to keep on    10    (live ). People in the future may live to be a lot older than 100 years.