乌贼体内有墨囊,遇到敌害时,墨汁从漏斗里喷出,染黑海水,乌贼趁机跳之夭夭。这一现象说明生物具有:()
A、应激性
B、遗传性
C、适应性
D、有序性
参考答案:A
The hospital opened 5 years ago. It _____ for 5 years.[ ]
A. opened
B. opens
C. has been open
D. has opened
青光眼发作后三联征
A.瞳孔散大
B.房角粘连
C.角膜后及晶体前色素沉着
D.虹膜扇形萎缩
E.晶状体青光眼斑