Medicine should be placed children’s reach to make sure of safetyA. withB. withinC. outD.

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A. with
B. within
C. out
(答案→)D. beyond
解析：介词辨析。with 带有，伴随；within 在……之内；out 在外面；beyond超出。句意：为了确保安全，药品应该放在儿童够不到的地方。超出某个范围，故选D。