补体的激活途径有经典途径和旁路途径。
参考答案:对
We____ Chinese. So you and I have black eyes and black hair. [ ]
A. all are
B. are all
C. are both
D. both are
申请使用人民币图样的申请人,应向中国人民银行当地分支机构提出申请,并提交申请报告。