EV﹣GP具有多个与抗体结合的位点．为了研究上述两种单抗（分别称为A、B）与EV﹣GP结合的位点是否相同，可按图3所示简要流程进行实验．

①请将图3中应使用的抗体填入下表i、ii、iii、iv处（填“A”或“B”或“无关抗体”），完成实验方案（一种即可）．

②若A、B与EV﹣GP结合的位点不同，与对照组1、2分别比较，实验组的荧光值应____．

图为浓硫酸与铜片反应的装置．请回答

①消费量的增加带来产品质量的提高

②消费对生产的调整和升级起着导向作用

③一个消费热点的出现能带动相关产业的成长

④消费是社会再生产过程中起决定作用的环节

    In our city there is a big zoo. There are a lot of different animals in it. There are some scary（可怕的） tigers and lions. They like eating meat and they eat much meat every day.

    There are also two big elephants and a baby one. Children like to ride(骑) one of them. The elephants are very kind and friendly. They eat much grass and bananas.

    In the zoo, we can see different kinds of bears, black bears and white bears. They are heavy(沉重的) . They are all slow and clumsy . They stand on their back legs and lift their front legs to ask for food. They like cakes very much.

    Do you like pandas? There's only one in the zoo. Her name is Huahua . She is very cute. She likes eating bamboo a lot. She is kind of shy. She's very interesting and lovely.