体液调节是指某些化学物质（如激素、二氧化碳）通过体液的传送，对人和动物体的生理活动所进行的调节，其中激素调节是体液调节的主要内容．如图（一）表示部分激素从分泌到发挥作用过程示意图，其中①、②、③、④代表人体内的不同激素；图（二）表示的是激素的传送方式．下列有关叙述正确的是（　　）

    My uncle is a teacher .He is a  1 man, about 25 years old. He is tall 2  black short hair. He is a very humorous(幽默的) person. He teaches us Chinese. He often  3 us jokes(笑话) and 4to make our class more   5 . In class, he is a very  6  teacher. If we 7  listen to him carefully, he will 8 us some punishment(惩罚) by 9  us some questions.10  after class, he becomes a very good  11 of us. He 12 talks with the girls and plays 13 with the boys.14 of us really like him. He is our 15 teacher.