It has been evident that too many children in the city are left ________ when their development requires parents’ close attention.A.aloneB.offC.outD.behind
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A解析这题考查词组辨析：Leave alone 听其自然，不管，leave off停止，leave out遗漏，leave behind留下，句意是：很显然，城市里的很多孩子在发展需要父母密切关注时，却被置之不理。选A。