大型活动现场发生突发事件，需要紧急疏散时在场人员要()。
A.按顺序迅速撤离现场
B.争先恐后逃跑
C.围观看热闹。
参考答案：A
选择合适的答语。
( ) 1. Why do you like spring?
( ) 2. Which season does Mike like best?
( ) 3. What do you do on Saturday?
( ) 4. What's Zoom doing?
( ) 5. When is your birthday?
A. He's sending Grandpa an e-card.
B. Usually I do my homework.
C. Because I can plant trees.
D. It's November 12th.
E. Fall.
钩端螺旋体病的最早期临床表现是（）
A.长期持续性高热
B.发热，咳嗽，咯血
C.发热头痛，结膜充血，腓肠肌痛
D.发热，恶心，呕吐，腹痛
E.发热，咳嗽，无尿
