The solution to the world’s food problems depends on ______. [br] The tone of th

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问题 The solution to the world’s food problems depends on ______. [br] The tone of the story shows the author believes the problem is ______.

选项 A、difficult to solve, perhaps impossible
B、difficult to solve but not impossible
C、impossible to solve
D、beyond the question

答案 A

解析见原文最后一句：看似明显的解决方法可能很难，甚至不可能实现。

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