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题库 / OG2018V-SC-270
In many of the world’s regions, increasing pressure on water resources has resulted both from expanding development, changes in climate, and from pollution, so that the future supply in some of the more arid areas is a concern going forward.
both from expanding development, changes in climate, and from pollution, so that the future supply in some of the more arid areas is a concern going forward
both from expanding development or changes in climate, and pollution, so that future supplies in some of the more arid areas are a concern
from expanding development, changes in climate, and also from pollution, so that the future supply in some of the more arid areas is a matter of concern going forward
from expanding development, changes in climate, and pollution, so that future supplies in some of the more arid areas are a concern
from expansion of development, changes in climate, and from pollution, so that supplies in some of the more arid areas are a future concern
are a concern 也可以吗？
觉得还是要根据语义吧，future supplies是一个问题，不是很多问题，所以用a concern就可以
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