已知流感病毒只含有一种核酸，现欲探究甲型H₁N₁流感病毒的核酸是DNA还是RNA．

材料用具：显微注射器，甲型H₁N₁流感病毒的核酸提取液，活鸡胚，DNA水解酶，RNA水解酶．

实验步骤：

（1）把甲型H₁N₁流感病毒核酸提取液分成相同的三组，分别用____ 处理其中两组核酸提取液．

（2）取等量的活鸡胚分成A、B、C三组，用显微注射技术向A组注射甲型H1N1流感病毒的核酸提取液，再分别向B、C两组活鸡胚中注射有关物质．

（3）分别从培养后的活鸡胚中抽取出样品，检测是否产生甲型H1N1流感病毒．

预测实验结果及分析：

①A组样品检测中含有甲型H₁N₁流感病毒．

②给B组活鸡胚注射的物质是____ ，若样品检测无甲型H₁N₁流感病毒产生，则____ 是遗传物质．

③给C组活鸡胚注射的物质是____ ，若样品检测无甲型H₁N₁流感病毒产生，则　____ 是遗传物质．

世界历史是人类自孤立和分散的状态，逐步发展成为一个密切联系的整体的过程。请阅读材料，结合所学知识回答问题。

材料一：勇于探索的航海家为世界大部分地区之间产生和加强联系做出了重要贡献，人类开始走向整体世界，同时伴随而来的是西欧血与火的殖民掠夺……殖民扩张活动为欧洲的资本主义原始积累做出重要贡献。

材料二：科学技术特别是交通运输和信息技术的迅速发展，大大缩短了世界各地的时间和空间距离，为全球范围的经济活动提供了便利条件，世界经济全球化趋势进一步加强。

材料三：经济全球化在促进各国经济进一步繁荣与发展的同时，有时还会带来环境污染、国际金融风险加大等严重问题，这需要不同肤色、不同种族的人们挽起手来，齐心协力，打造和谐的全球经济，营造和谐的地球村。

阅读下面短文，按要求完成各项任务．

    Every year animals all around the world take part in some wonderful journeys．Here are the stories of two amazing animal travelers．

    Humpback whales （ 座 头 鲸 ） prefer a slow journey．The humpbacks，

    which travel over 10，000kilometers on their journey from Alaska to Hawaii，swim at a relaxing speed of about 1.6kilometers an hour．Although they don't swim fast，humpback whales travel farther than any other kinds of whale．

    Every August a fantastic sight can be seen in the skies above Ontario and Montreal﹣millions of amazing Monarch butterflies （ 帝 王 蝶） beginning their 4，000﹣kilometer journey from Canada to Central Mexico．In fact，the journey，which takes about 3months，is longer than the average （ 平 均 的 ） life of the butterfly．Finally many of the butterflies reaching their final place are the great grandchildren or even the great great grandchildren of the butterflies who began the journey in Mexico the year before．

根据句意及所给中文提示或英文解释，写出句中所缺单词，每空限填一词。
(1)Keep a____ (微笑) all the time, you'll have a happier life.
(2)The weather report says it will be ____（有雨的）. Please take an umbrella with you.
(3)Drivers should ____ （停车）their cars in the right place, or they will be fined.
(4)Audrey Hepburn had put her ____ （努力） into ballet training before she entered the film industry.
(5)Daniel's____ （努力）is to be a famous director in the future.
(6)Zhang Sen was a brave young man. He____ (keep somebody safe from danger)a young lady from a river several months ago.
(7)Our teachers are____  (treating every person equally) to everybody in our class. We all love them.

①制备培养基。

②纤维素分解菌的分离、纯化。取富集培养后的土样培养液，经适当稀释后，移取培养液各0.1mL分别接种到能分别筛选出细菌、真菌和放线菌的固体培养基上进行分离、纯化培养。

③纤维素分解菌的初筛。将已经纯化的菌株接种到同一个以纤维素为唯一碳源的固体培养基上，使用刚果红染色法，根据培养基平板上透明圈直径（D）与菌落直径（d）比值的大小，初步筛选出纤维素优势分解菌。

回答下列问题：