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题型：填空题 题类：常考题 难易度：普通
闽教版（三年级起点）小学英语五年级上册Unit 1 Part B 同步练习3
— Are blue whales {#blank#}1{#/blank#} danger?
— Yes. There are only about ten {#blank#}2{#/blank#} in the wild.
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