Listen! Can you hear a baby ______? [ ]
A. cry
B. to cry
C. crying
D. cries
答案:C
青年人发生玻璃体积血最常见于()。
A.糖尿病性视网膜病变
B.视网膜静脉周围炎
C.视网膜脱离
D.视网膜动脉硬化
E.葡萄膜炎
下列的()对危机管理做了简洁的说明。
A、Prevention is better than cure
B、Care is better than prevention
C、Prevention is no need
D、Care is best