A. 嗅觉 B. 发声 C. 防御 D. 内分泌 E. 呼吸
A. 增大 B. 减小 C. 先增大再减小 D. 先减小再增大
A. equality B. equality,democracy and the common people C. democracy D. democracy and the common people
A. 10 B. 20 C. 30 D. 40