A:①②③分别代表血浆、淋巴和组织液,三者共同构成人体内环境
B:当人体蛋白质长期供应不足时,①③等处的渗透压会降低
C:①中含有的成分有:血浆蛋白、抗体、神经递质、水、无机盐等
D:无氧呼吸产生并释放到①中的乳酸由缓冲物质中和,以维持内环境pH相对稳定
There'll be many changes in my school in the future. Students won't____schoolbags to go to school any more. Everyone will have a computer. They will study ____. They will learn all about ____on computers. They will also learn____on computers too. There won't be any school buses in the future. They will ____to school by flying bike.
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