In the countryside, there are many dropouts(辍学者), I think the difficulty ________ the poor economic conditions．A.results fromB.results inC.leads toD.suffers from
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A解析result from sth．意为“(因某事而)发生”；result in sth．意为“产生某种作用或结果”；lead to意为“导致”；suffer from意为“遭受”。由题意可知，后面的内容是原因，前面是结果，故A项正确。