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题型：翻译 题类：常考题 难易度：普通
人教版（新课程标准）高中英语必修4 Unit 2同步练习一
We must {#blank#}1{#/blank#} the knowledge we have learned so that we'll be more likely to innovate in the future.
Many species of {#blank#}1{#/blank#} are facing as {#blank#}2{#/blank#} {#blank#}3{#/blank#} as many {#blank#}4{#/blank#} animals.
{#blank#}1{#/blank#} {#blank#}2{#/blank#} Xiao Mei is! She is always the first to come and the last to leave.
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