题目内容：
根据下面资料，回答题 Up until a few decades ago, our visions of the future were largely - though by nomeans uniformly - glowingly positive. Science and technology would cure all the illsof humanity, leading to lives of fulfilment and opportunity for all.
Now utopia has grown unfashionable, as we have gained a deeper appreciationof the range of threats facing us, from asteroid strike to epidemic flu and to climatechange. You might even be tempted to assume that humanity has little future to lookforward to.
But such gloominess is misplaced. The fossil record shows that many specieshave endured for millions of years - so why shouldn't we? Take a broader look at ourspecies' place in the universe, and it becomes clear that we have an excellent chanceof surviving for tens, if not hundreds, of thousands of years. Look up Homo sapiensin the "Red List" of threatened species of the International Union for theConservation of Nature (IUCN) and you will read: "Listed as Least Concern as thespecies is very widely distributed, adaptable, currently increasing, and there are nomajor threats resulting in an overall population decline."
So what does our deep future hold? A growing number of researchers andorganisations are now thinking seriously about that question. For example, the LongNow Foundation has as its flagship project a mechanical clock that is designed to stillbe marking time thousands of years hence.
Perhaps willfully, it may be easier to think about such lengthy timescales thanabout the more immediate future. The potential evolution of today's technology, andits social consequences, is dazzlingly complicated, and it's perhaps best left to sciencefiction writers and futurologists to explore the many possibilities we can envisage.That's one reason why we have launched Arc, a new publication dedicated to the nearfuture.
But take a longer view and there is a surprising amount that we can say withconsiderable assurance. As so often, the past holds the key to the future: we have nowidentified enough of the long-term patterns shaping the history of the planet, and ourspecies, to make evidence-based forecasts about the situations in which ourdescendants will find themselves.
This long perspective makes the pessimistic view of our prospects seem morelikely to be a passing fad. To be sure, the future is not all rosy. But we are nowknowledgeable enough to reduce many of the risks that threatened the existence ofearlier humans, and to improve the lot of those to come.
Our vision of the future used to be inspired by_______. A．our desire for lives of fulfillment.
A．our desire for lives of fulfillment.
B．our faith in science and technology.
B．our faith in science and technology.
C．our awareness of potential risks.
C．our awareness of potential risks.
D．our belief in equal opportunity.
D．our belief in equal opportunity.
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