题目

阅读下面短文，在空白处填入适当的词，如有括号提示，请以提示词的正确形式填空。请将答案的完整形式写在答题卡上相应题号的横线上。Experts in a Scottish University are urging world governments to step up their efforts on fighting microplastics pollution in the sea.The University is part of a global organization 【1】 (make) up of 28 island universities which are devoted to increasing awareness of oceanic environmental issues. According to the group，although people 【2】 (warn) many times these years that oceans are suffering, they ar下列属于PCR技术的条件的是①单链的脱氧核苷酸序列引物 ②目的基因所在的DNA片段 ③脱氧核苷酸 ④核糖核苷酸 ⑤DNA连接酶 ⑥DNA聚合酶 ⑦DNA限制性内切酶A. ①②③⑤ B. ①②③⑥C. ①②③⑤⑦ D. ①②④⑤⑦