填空题 Why should mankind explore space? Perhaps the best reason for exploring space is our built-in 1 predisposition to expand into all possible parts of space. Culturally nearly every successful civilization has been willing to 2 . In exploring, 3 of surrounding areas may be learned and prepared for.
Exploration also allows 4 to be located. These resources translate into 5 and success at survival. Resources may be more than 6 assets. Knowledge or 7 acquired in exploring or preparing to explore always filter from the developers to the general 8 . Techniques may be 9 or 10 , allowing the people in a society to better 11 those within or outside the culture. Better understanding may lead to better use of resources or a lessening of outright 12 for the resources.
The chance of a large 13 or comet hitting Earth, though small, will 14 . Without the ability to reach out across space, the chance to 15 ourselves might not exist. Our genetic 16 will allow humans to move into unoccupied parts of space and 17 . If one group is eliminated, the 18 as a whole survives. The more a culture expands, the less chance of it becoming 19 . Space allows us to 20 .