牛津譯林版高中英語必修五unit3scienceandnature第3課時教案(存儲版)
【正文】 space is this geic tendency to expand wherever possible. Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be pletely destroyed by the danger. With knowledge, we can lessen its effects. Exploration also allows minerals and other potential (潛在的 ) resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spinoffs including improvements in earthquake prediction, in satellites for weather forecasting and in munications systems. Even nonstick pans and mirrored sunglasses are byproducts (副產(chǎn)品 ) of technological developments in the space, the chance to save ourselves might not exist. While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist. While Earth is the only pla known to support life, surely the
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