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  3. PASSAGE TWO How can more fish tolerate extremely cold water?

PASSAGE TWO How can more fish tolerate extremely cold water?

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问题 PASSAGE TWO
How can more fish tolerate extremely cold water?
选项
答案By transplanting “anti-freeze” gene into other species．
解析 根据题目中的extremely cold water定位到第5段末句。该句表明利用转基因技术成功培育出抗冻能力强的鱼类，题目中的tolerate是对原文survive in的同义改写，题目问的是How，故句中表方式的介词短语By transplanting “anti-freeze” gene into other species为答案。注意该短语中的this是承接上一句来讲，简答时不宜照搬这个词，应去掉。
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