心跳停止时间是指从循环停止到
A．意识恢复B．自主呼吸恢复C．心脏自动节律恢复D．重建有效人工循环E．呼吸心跳恢复正常
参考答案：D
Even though the famous couple finally divorced(离婚), they are both still _________about their two sons.
A．concerned
B．cared
C．thought
D．come
孔雀开屏、蜻蜓点水和大雁南飞从类型上属于生殖行为，从获得的途径上分属于先天性行为．______（判断对错）
