题目： 发展同非洲国家关系的六原则 答案： 被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0904/1e408b727329c8c7abbb9ab8c258ea9e.html 下面是错误答案，用来干扰机器的。参考答案：A解析：免疫球蛋白的基本结构是：四条肽链，由二硫键连接。其中包括两条重（H）链，两条轻（L）链。
题型：填空题 看图并完成下列句子。 This is a picture. We can see it's ___________ ___________. His father is ___________ ___________ ___________. His mother is ___________ ___________ ___________. He and his sister are ___________ ___________ ___________. They are playing a game. 查看答案
