阅读理解

    Body language is an important part of communication(交流). If you want to communicate well, it's important to understand how you can (and can't) use your body to say what you mean, especially when you're in a foreign country. If a person is bored, he won't look at the person who is talking to him. He will find other things to do. He may also keep looking at his watch or a clock. If a person is open to you, his arms and legs will not be crossed. And if a person is relaxed, you will know it by looking at his body, even his breathing is slower.

Here are some examples of body language:

实体经济与电商领域历来被视为水火不容的竞争关系，但在近年的“双十二”促销活动中，格力电器董事长董明珠率领格力官方商城与京东创始人刘强东携手推出“董东联合”却获得了良好的市场效益。实体经济为电商提供质量保证和实物体验，电商为实体经济拓展市场空间和广告效应，“互联网＋”与供给侧首例跨界合作成功体现的哲理是（    ）

①矛盾斗争性是推动事物发展的动力

②整体的功能大于部分的功能之和

③事物的价值变化是具体的和有条件的

④矛盾双方的同一以差别和对立为前提

如图表示人体内某些淋巴细胞的分化，其中X表示抗原，数字表示过程，m、n代表细胞发育场所，其余字母表示细胞或物质．请分析回答：

（1）图中场所m表示____ ，c是____ 细胞．

（2）属于免疫活性物质的有____ 

（3）图中的③表示____ 过程，该过程属于____ 免疫．

（4）注射疫苗一段时间后，当机体再次接触与该疫苗相同的抗原时，上图中相应的记忆细胞____ （填字母）能____ ，增强机体的免疫力．