高中英語(yǔ)unit2cloning視聽說(shuō)選修課listeningfordetails練習(xí)新人教版選修8(已改無(wú)錯(cuò)字)
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【正文】 o ______. This fossilized tree sap, which we call ______, _________ millions of years with the mosquito inside. Until Jurassic Park scientists came along. _____ sophisticated techniques, they extract the preserved blood from the mosquito, and bingo.: dino . A full . strand contains three ______ geic codes. If we looked at screens like these once a second for _____ hours a day, it39。d take two years to look at the ______ . strand. It39。s that ____. Since it39。s so old, it39。s full of _____. Now that39。s w
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