Arthur C.Clark once suggested a revolutionary idea passes through three phases:
1. ‘It’s impossible – don’t waste my time.’
2. ‘It’s possible, but not worth doing.’
3. ‘I said it was a good idea all along.’
(1)_______________________. Mars has an extraordinary fascination for would –be voyagers. America, Russia and Europe are filled with enthusiasts – many of them serious and senior scientists – who dream of sending people to it. Their aim is understandable. (2)_______________________. It is a world of red sandy deserts( hence its name – the Red Planet), cloudless skies, savage sandstorms, chasms wider than the Grand Canyon and at least one mountain more than twice as tall as Everest. It seems ideal for settlement.
发表于 2012-1-26 22:45
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