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题型：单选题 题类：常考题 难易度：普通
河北省唐山市滦南县2016-2017学年七年级上学期英语期末试题
This black and white animal is the favourite of people {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} .
— No, it's very dangerous for you kids ______________ swimming without adults.
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