【题目】In order not to get into trouble, advertisers are increasingly cautious about taking out ads_______children.
A. being aimed at B. aimed at
C. having aimed at D. having been aimed at
在线课程【答案】B
【解析】
试题分析：考查过去分词短语作定语。句意：为了不惹麻烦，做广告的人对挑选针对孩子的广告越来越谨慎。aim...at...旨在；这里是把aim ads at children, 变成过去分词短语作定语修饰ads， 故选B。