【段6】①But take a longer view and there is a surprising amount that we can say with considerable assurance. ②As so often, the past holds the key to the future: we have now identified enough of the long-term patterns shaping the history of the planet, and our species, to make evidence-based forecasts about the situations in which our descendants will find themselves.
34.To ensure the future of mankind, it is crucial to
[A]draw on our experience from the past.
[B]adopt an optimistic view of the world.
[C]explore our planet’s abundant resources.
[D]curb our ambition to reshape history.
答案：A
问：34题题干中的is crucial to对应到原文中，是对下列哪项的同义改写？
A : identified
B : make forecasts
C : holds the key to
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