2016届高考英语一轮复习课时作业：语言朋友（36）(北师大版)_高考复习指南

2016届高考英语一轮复习课时作业：语言朋友（36）(北师大版)

　　语言朋友(36)

　　mankind explore space? Why should money, time and effort be spent exploring and researching something with so few apparent benefits? Why should resources be spent on space rather than on conditions and people on Earth? These are questions that, understandably, are very often asked.

　　Perhaps the best answer lies in our genetic makeup(基因构成) as human beings.What drove our ancestors to move from the trees into the plains,

　　The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic 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 completely destroyed by the danger. With knowledge, we can lessen its effects.

　　Exploration also allows minerals and other potential(潜在的) resources to be found.Even if we have no immediate need of them, haps 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 communications systems. Even non璼tick pans and mirrored sunglasses are by璸roducts ra(副产品) of technological developments in the space.rse 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.